./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.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_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/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_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/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_4c8796f6-efec-40be-a0b9-97cbb61104c8/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 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:21:45,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:21:45,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:21:45,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:21:45,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:21:45,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:21:45,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:21:45,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:21:45,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:21:45,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:21:45,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:21:45,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:21:45,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:21:45,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:21:45,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:21:45,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:21:45,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:21:45,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:21:45,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:21:45,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:21:45,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:21:45,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:21:45,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:21:45,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:21:45,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:21:45,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:21:45,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:21:45,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:21:45,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:21:45,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:21:45,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:21:45,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:21:45,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:21:45,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:21:45,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:21:45,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:21:45,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:21:45,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:21:45,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:21:45,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:21:45,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:21:45,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:21:45,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:21:45,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:21:45,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:21:45,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:21:45,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:21:45,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:21:45,218 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:21:45,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:21:45,218 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:21:45,218 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:21:45,218 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:21:45,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:21:45,219 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:21:45,219 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:21:45,219 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:21:45,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:21:45,220 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:21:45,220 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:21:45,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:21:45,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:21:45,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:21:45,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:21:45,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:21:45,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:21:45,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:21:45,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:21:45,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:21:45,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:21:45,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:21:45,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:45,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:21:45,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:21:45,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:21:45,224 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:21:45,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:21:45,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:21:45,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:21:45,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:21:45,224 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_4c8796f6-efec-40be-a0b9-97cbb61104c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2021-11-25 20:21:45,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:21:45,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:21:45,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:21:45,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:21:45,489 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:21:45,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-25 20:21:45,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/data/b333de3cd/f10d1b2e47d64208bd8cf1b08f949070/FLAG6a88be9dc [2021-11-25 20:21:46,535 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:21:46,535 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-25 20:21:46,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/data/b333de3cd/f10d1b2e47d64208bd8cf1b08f949070/FLAG6a88be9dc [2021-11-25 20:21:46,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/data/b333de3cd/f10d1b2e47d64208bd8cf1b08f949070 [2021-11-25 20:21:46,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:21:46,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:21:46,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:46,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:21:46,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:21:46,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:46" (1/1) ... [2021-11-25 20:21:46,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eecebe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:46, skipping insertion in model container [2021-11-25 20:21:46,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:46" (1/1) ... [2021-11-25 20:21:46,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:21:47,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:21:50,391 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_4c8796f6-efec-40be-a0b9-97cbb61104c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-25 20:21:50,394 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_4c8796f6-efec-40be-a0b9-97cbb61104c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-25 20:21:50,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:50,466 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:21:50,973 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_4c8796f6-efec-40be-a0b9-97cbb61104c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-25 20:21:50,973 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_4c8796f6-efec-40be-a0b9-97cbb61104c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-25 20:21:50,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:51,212 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:21:51,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51 WrapperNode [2021-11-25 20:21:51,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:51,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:51,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:21:51,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:21:51,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,595 INFO L137 Inliner]: procedures = 490, calls = 2384, calls flagged for inlining = 232, calls inlined = 186, statements flattened = 4701 [2021-11-25 20:21:51,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:51,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:21:51,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:21:51,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:21:51,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:21:51,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:21:51,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:21:51,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:21:51,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (1/1) ... [2021-11-25 20:21:51,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:51,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:21:51,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:21:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:21:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:21:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:21:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:21:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 20:21:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 20:21:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 20:21:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 20:21:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_open [2021-11-25 20:21:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_open [2021-11-25 20:21:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:21:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:21:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:21:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:21:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-25 20:21:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-25 20:21:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-25 20:21:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-25 20:21:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 20:21:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 20:21:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:21:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:21:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 20:21:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 20:21:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_wptr [2021-11-25 20:21:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_wptr [2021-11-25 20:21:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:21:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:21:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:21:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:21:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:21:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:21:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:21:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:21:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:21:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:21:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-25 20:21:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-25 20:21:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:21:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:21:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:21:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:21:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:21:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:21:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:21:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 20:21:51,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 20:21:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:21:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 20:21:51,956 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 20:21:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:21:51,956 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:21:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:21:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:21:51,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:21:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_tx_db_ptr_next [2021-11-25 20:21:51,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_tx_db_ptr_next [2021-11-25 20:21:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:21:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:21:51,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:21:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:21:51,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:21:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:21:51,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:21:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_close [2021-11-25 20:21:51,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_close [2021-11-25 20:21:51,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:21:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:21:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 20:21:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 20:21:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2021-11-25 20:21:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2021-11-25 20:21:51,959 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 20:21:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 20:21:51,960 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 20:21:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 20:21:51,960 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:21:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:21:51,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:21:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:21:51,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:21:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_restore_mac [2021-11-25 20:21:51,961 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_restore_mac [2021-11-25 20:21:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:21:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rx_alloc_skbs [2021-11-25 20:21:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rx_alloc_skbs [2021-11-25 20:21:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:21:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:21:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:21:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:21:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:21:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:21:51,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:21:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-25 20:21:51,963 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-25 20:21:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:21:51,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:21:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:21:51,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:21:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 20:21:51,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 20:21:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 20:21:51,964 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 20:21:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:21:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:21:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:21:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:21:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_available [2021-11-25 20:21:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_available [2021-11-25 20:21:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 20:21:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 20:21:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:21:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:21:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 20:21:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 20:21:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_addr_elem [2021-11-25 20:21:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_addr_elem [2021-11-25 20:21:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-25 20:21:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-25 20:21:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:21:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:21:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:21:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:21:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:21:51,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:21:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_rptr [2021-11-25 20:21:51,968 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_rptr [2021-11-25 20:21:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:21:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:21:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:21:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:21:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_vlan_rx_vid [2021-11-25 20:21:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_vlan_rx_vid [2021-11-25 20:21:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 20:21:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 20:21:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_free [2021-11-25 20:21:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_free [2021-11-25 20:21:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_remove [2021-11-25 20:21:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_remove [2021-11-25 20:21:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:21:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:21:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:21:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:21:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 20:21:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 20:21:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:21:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:21:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:21:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-25 20:21:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-25 20:21:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:21:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:21:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:21:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:21:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 20:21:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 20:21:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:21:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:21:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_reset [2021-11-25 20:21:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_reset [2021-11-25 20:21:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:21:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:21:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:21:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:21:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_alloc_elem [2021-11-25 20:21:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_alloc_elem [2021-11-25 20:21:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_range_check [2021-11-25 20:21:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_range_check [2021-11-25 20:21:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 20:21:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 20:21:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-25 20:21:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-25 20:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:21:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_init [2021-11-25 20:21:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_init [2021-11-25 20:21:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:21:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_link_changed [2021-11-25 20:21:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_link_changed [2021-11-25 20:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:21:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:21:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:21:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:21:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_setmulti [2021-11-25 20:21:51,978 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_setmulti [2021-11-25 20:21:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure print_rxfd [2021-11-25 20:21:51,978 INFO L138 BoogieDeclarations]: Found implementation of procedure print_rxfd [2021-11-25 20:21:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:21:51,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:21:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:21:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:21:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:21:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:21:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:21:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:21:51,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:21:52,743 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:21:52,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:21:52,883 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:24:20,346 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:24:20,424 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:24:23,110 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:24:23,110 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:24:23,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:23 BoogieIcfgContainer [2021-11-25 20:24:23,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:24:23,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:24:23,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:24:23,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:24:23,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:21:46" (1/3) ... [2021-11-25 20:24:23,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3927f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:23, skipping insertion in model container [2021-11-25 20:24:23,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:51" (2/3) ... [2021-11-25 20:24:23,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3927f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:23, skipping insertion in model container [2021-11-25 20:24:23,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:23" (3/3) ... [2021-11-25 20:24:23,124 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-25 20:24:23,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:24:23,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 20:24:23,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:24:23,194 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 20:24:23,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 20:24:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 1231 states, 720 states have (on average 1.275) internal successors, (918), 743 states have internal predecessors, (918), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2021-11-25 20:24:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 20:24:23,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:23,283 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:23,284 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1118130461, now seen corresponding path program 1 times [2021-11-25 20:24:23,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700241432] [2021-11-25 20:24:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:23,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-25 20:24:24,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:24,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700241432] [2021-11-25 20:24:24,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700241432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:24,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:24,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:24,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457045863] [2021-11-25 20:24:24,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:24,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:24,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:24,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:24,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:24,938 INFO L87 Difference]: Start difference. First operand has 1231 states, 720 states have (on average 1.275) internal successors, (918), 743 states have internal predecessors, (918), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:24:27,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:32,158 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 20:24:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:33,015 INFO L93 Difference]: Finished difference Result 3387 states and 4870 transitions. [2021-11-25 20:24:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2021-11-25 20:24:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:33,056 INFO L225 Difference]: With dead ends: 3387 [2021-11-25 20:24:33,056 INFO L226 Difference]: Without dead ends: 2110 [2021-11-25 20:24:33,071 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 20:24:33,075 INFO L933 BasicCegarLoop]: 1959 mSDtfsCounter, 1308 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:33,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 3407 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 572 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-11-25 20:24:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2021-11-25 20:24:33,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2105. [2021-11-25 20:24:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 1262 states have (on average 1.2567353407290016) internal successors, (1586), 1298 states have internal predecessors, (1586), 682 states have call successors, (682), 159 states have call predecessors, (682), 159 states have return successors, (682), 677 states have call predecessors, (682), 682 states have call successors, (682) [2021-11-25 20:24:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2950 transitions. [2021-11-25 20:24:33,398 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2950 transitions. Word has length 86 [2021-11-25 20:24:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:33,399 INFO L470 AbstractCegarLoop]: Abstraction has 2105 states and 2950 transitions. [2021-11-25 20:24:33,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 20:24:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2950 transitions. [2021-11-25 20:24:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:24:33,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:33,411 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:33,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:24:33,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:33,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1620916492, now seen corresponding path program 1 times [2021-11-25 20:24:33,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:33,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367711089] [2021-11-25 20:24:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:33,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-25 20:24:34,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:34,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367711089] [2021-11-25 20:24:34,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367711089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:34,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:34,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:34,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942468617] [2021-11-25 20:24:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:34,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:34,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:34,298 INFO L87 Difference]: Start difference. First operand 2105 states and 2950 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:24:36,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:39,938 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 20:24:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:42,040 INFO L93 Difference]: Finished difference Result 5836 states and 8157 transitions. [2021-11-25 20:24:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 93 [2021-11-25 20:24:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:42,073 INFO L225 Difference]: With dead ends: 5836 [2021-11-25 20:24:42,074 INFO L226 Difference]: Without dead ends: 3742 [2021-11-25 20:24:42,085 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 20:24:42,087 INFO L933 BasicCegarLoop]: 1771 mSDtfsCounter, 1560 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:42,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 3062 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 491 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 20:24:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-11-25 20:24:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3735. [2021-11-25 20:24:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 2246 states have (on average 1.257346393588602) internal successors, (2824), 2311 states have internal predecessors, (2824), 1188 states have call successors, (1188), 300 states have call predecessors, (1188), 299 states have return successors, (1200), 1173 states have call predecessors, (1200), 1188 states have call successors, (1200) [2021-11-25 20:24:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5212 transitions. [2021-11-25 20:24:42,333 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5212 transitions. Word has length 93 [2021-11-25 20:24:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:42,336 INFO L470 AbstractCegarLoop]: Abstraction has 3735 states and 5212 transitions. [2021-11-25 20:24:42,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:24:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5212 transitions. [2021-11-25 20:24:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 20:24:42,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:42,343 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 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] [2021-11-25 20:24:42,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:24:42,343 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:42,344 INFO L85 PathProgramCache]: Analyzing trace with hash -384280151, now seen corresponding path program 1 times [2021-11-25 20:24:42,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395541180] [2021-11-25 20:24:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:42,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-25 20:24:43,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:43,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395541180] [2021-11-25 20:24:43,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395541180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:43,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:43,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:43,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945962054] [2021-11-25 20:24:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:43,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:43,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:43,145 INFO L87 Difference]: Start difference. First operand 3735 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:24:45,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:50,576 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 20:24:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:51,592 INFO L93 Difference]: Finished difference Result 9019 states and 12577 transitions. [2021-11-25 20:24:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 130 [2021-11-25 20:24:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:51,640 INFO L225 Difference]: With dead ends: 9019 [2021-11-25 20:24:51,641 INFO L226 Difference]: Without dead ends: 5295 [2021-11-25 20:24:51,659 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 20:24:51,664 INFO L933 BasicCegarLoop]: 2499 mSDtfsCounter, 1263 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:51,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 3886 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 733 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 20:24:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2021-11-25 20:24:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5289. [2021-11-25 20:24:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 3187 states have (on average 1.2532161907750234) internal successors, (3994), 3278 states have internal predecessors, (3994), 1670 states have call successors, (1670), 431 states have call predecessors, (1670), 430 states have return successors, (1683), 1649 states have call predecessors, (1683), 1670 states have call successors, (1683) [2021-11-25 20:24:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 7347 transitions. [2021-11-25 20:24:51,973 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 7347 transitions. Word has length 130 [2021-11-25 20:24:51,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:51,976 INFO L470 AbstractCegarLoop]: Abstraction has 5289 states and 7347 transitions. [2021-11-25 20:24:51,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:24:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 7347 transitions. [2021-11-25 20:24:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 20:24:51,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:51,990 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:51,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:24:51,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1444604824, now seen corresponding path program 1 times [2021-11-25 20:24:51,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:51,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146070213] [2021-11-25 20:24:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:51,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-11-25 20:24:53,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146070213] [2021-11-25 20:24:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146070213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:53,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:53,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031041670] [2021-11-25 20:24:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:53,043 INFO L87 Difference]: Start difference. First operand 5289 states and 7347 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:24:55,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:59,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:01,360 WARN L534 Checker$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 20:25:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:02,208 INFO L93 Difference]: Finished difference Result 10573 states and 14690 transitions. [2021-11-25 20:25:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:25:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 192 [2021-11-25 20:25:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:02,253 INFO L225 Difference]: With dead ends: 10573 [2021-11-25 20:25:02,253 INFO L226 Difference]: Without dead ends: 5295 [2021-11-25 20:25:02,278 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 20:25:02,280 INFO L933 BasicCegarLoop]: 1428 mSDtfsCounter, 0 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:02,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2855 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 498 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 20:25:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2021-11-25 20:25:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5295. [2021-11-25 20:25:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 3193 states have (on average 1.252740369558409) internal successors, (4000), 3284 states have internal predecessors, (4000), 1670 states have call successors, (1670), 431 states have call predecessors, (1670), 430 states have return successors, (1683), 1649 states have call predecessors, (1683), 1670 states have call successors, (1683) [2021-11-25 20:25:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7353 transitions. [2021-11-25 20:25:02,626 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7353 transitions. Word has length 192 [2021-11-25 20:25:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:02,627 INFO L470 AbstractCegarLoop]: Abstraction has 5295 states and 7353 transitions. [2021-11-25 20:25:02,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:25:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7353 transitions. [2021-11-25 20:25:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-25 20:25:02,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:02,638 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:02,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:25:02,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:02,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1254316823, now seen corresponding path program 1 times [2021-11-25 20:25:02,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:02,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071834011] [2021-11-25 20:25:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:02,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-11-25 20:25:03,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:03,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071834011] [2021-11-25 20:25:03,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071834011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:25:03,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455220266] [2021-11-25 20:25:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:03,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:25:03,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:25:03,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:25:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:05,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 4810 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 20:25:05,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:25:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-11-25 20:25:36,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:25:36,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455220266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:36,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:25:36,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-25 20:25:36,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142407679] [2021-11-25 20:25:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:36,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:25:36,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:25:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:25:36,988 INFO L87 Difference]: Start difference. First operand 5295 states and 7353 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-11-25 20:25:39,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:50,505 WARN L534 Checker$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 20:25:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:53,416 INFO L93 Difference]: Finished difference Result 9903 states and 13711 transitions. [2021-11-25 20:25:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:25:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 193 [2021-11-25 20:25:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:53,498 INFO L225 Difference]: With dead ends: 9903 [2021-11-25 20:25:53,498 INFO L226 Difference]: Without dead ends: 9901 [2021-11-25 20:25:53,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:25:53,504 INFO L933 BasicCegarLoop]: 1783 mSDtfsCounter, 1365 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 7874 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:53,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 7874 Invalid, 1983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1980 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2021-11-25 20:25:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9901 states. [2021-11-25 20:25:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9901 to 9893. [2021-11-25 20:25:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9893 states, 5998 states have (on average 1.2577525841947317) internal successors, (7544), 6171 states have internal predecessors, (7544), 3065 states have call successors, (3065), 830 states have call predecessors, (3065), 828 states have return successors, (3090), 3023 states have call predecessors, (3090), 3065 states have call successors, (3090) [2021-11-25 20:25:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9893 states to 9893 states and 13699 transitions. [2021-11-25 20:25:54,185 INFO L78 Accepts]: Start accepts. Automaton has 9893 states and 13699 transitions. Word has length 193 [2021-11-25 20:25:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:54,186 INFO L470 AbstractCegarLoop]: Abstraction has 9893 states and 13699 transitions. [2021-11-25 20:25:54,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-11-25 20:25:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9893 states and 13699 transitions. [2021-11-25 20:25:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-25 20:25:54,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:54,211 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2021-11-25 20:25:54,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:25:54,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:54,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:54,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:54,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1425732158, now seen corresponding path program 1 times [2021-11-25 20:25:54,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:54,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334335874] [2021-11-25 20:25:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:54,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-25 20:25:55,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334335874] [2021-11-25 20:25:55,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334335874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:55,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:25:55,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:25:55,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779888007] [2021-11-25 20:25:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:55,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:25:55,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:25:55,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:25:55,128 INFO L87 Difference]: Start difference. First operand 9893 states and 13699 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-25 20:25:57,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:00,419 WARN L534 Checker$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 20:26:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:02,866 INFO L93 Difference]: Finished difference Result 19848 states and 27331 transitions. [2021-11-25 20:26:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:02,869 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 267 [2021-11-25 20:26:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:02,921 INFO L225 Difference]: With dead ends: 19848 [2021-11-25 20:26:02,921 INFO L226 Difference]: Without dead ends: 9966 [2021-11-25 20:26:02,962 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 20:26:02,963 INFO L933 BasicCegarLoop]: 1727 mSDtfsCounter, 1249 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:02,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 3130 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 20:26:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2021-11-25 20:26:03,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9961. [2021-11-25 20:26:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 6055 states have (on average 1.2398018166804294) internal successors, (7507), 6235 states have internal predecessors, (7507), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3056), 2978 states have call predecessors, (3056), 3022 states have call successors, (3056) [2021-11-25 20:26:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 13585 transitions. [2021-11-25 20:26:03,700 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 13585 transitions. Word has length 267 [2021-11-25 20:26:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:03,701 INFO L470 AbstractCegarLoop]: Abstraction has 9961 states and 13585 transitions. [2021-11-25 20:26:03,701 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-25 20:26:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 13585 transitions. [2021-11-25 20:26:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-25 20:26:03,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:03,710 INFO L514 BasicCegarLoop]: trace histogram [11, 8, 8, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:03,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:26:03,711 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash 856483651, now seen corresponding path program 1 times [2021-11-25 20:26:03,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:03,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940666626] [2021-11-25 20:26:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:03,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-25 20:26:04,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:04,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940666626] [2021-11-25 20:26:04,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940666626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:04,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:04,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:26:04,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363648699] [2021-11-25 20:26:04,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:04,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:26:04,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:26:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:04,471 INFO L87 Difference]: Start difference. First operand 9961 states and 13585 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 20:26:06,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:10,801 WARN L534 Checker$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 20:26:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:12,852 INFO L93 Difference]: Finished difference Result 19932 states and 27239 transitions. [2021-11-25 20:26:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:26:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 271 [2021-11-25 20:26:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:12,898 INFO L225 Difference]: With dead ends: 19932 [2021-11-25 20:26:12,898 INFO L226 Difference]: Without dead ends: 10000 [2021-11-25 20:26:12,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:26:12,935 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 7 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4265 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:12,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4265 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 20:26:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-11-25 20:26:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 9977. [2021-11-25 20:26:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9977 states, 6071 states have (on average 1.2391698237522648) internal successors, (7523), 6251 states have internal predecessors, (7523), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3056), 2978 states have call predecessors, (3056), 3022 states have call successors, (3056) [2021-11-25 20:26:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9977 states to 9977 states and 13601 transitions. [2021-11-25 20:26:13,698 INFO L78 Accepts]: Start accepts. Automaton has 9977 states and 13601 transitions. Word has length 271 [2021-11-25 20:26:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:13,699 INFO L470 AbstractCegarLoop]: Abstraction has 9977 states and 13601 transitions. [2021-11-25 20:26:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 20:26:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 9977 states and 13601 transitions. [2021-11-25 20:26:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-25 20:26:13,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:13,709 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:13,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:26:13,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1016545639, now seen corresponding path program 1 times [2021-11-25 20:26:13,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:13,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812936716] [2021-11-25 20:26:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:13,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-11-25 20:26:14,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:14,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812936716] [2021-11-25 20:26:14,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812936716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:14,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:14,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:26:14,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936746660] [2021-11-25 20:26:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:14,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:26:14,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:26:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:26:14,536 INFO L87 Difference]: Start difference. First operand 9977 states and 13601 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 20:26:16,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:20,635 WARN L534 Checker$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 20:26:23,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:23,063 INFO L93 Difference]: Finished difference Result 19964 states and 27271 transitions. [2021-11-25 20:26:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:26:23,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 306 [2021-11-25 20:26:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:23,109 INFO L225 Difference]: With dead ends: 19964 [2021-11-25 20:26:23,109 INFO L226 Difference]: Without dead ends: 10016 [2021-11-25 20:26:23,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:26:23,140 INFO L933 BasicCegarLoop]: 1432 mSDtfsCounter, 7 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:23,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4279 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 20:26:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2021-11-25 20:26:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 9993. [2021-11-25 20:26:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9993 states, 6087 states have (on average 1.2385411532774766) internal successors, (7539), 6267 states have internal predecessors, (7539), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3056), 2978 states have call predecessors, (3056), 3022 states have call successors, (3056) [2021-11-25 20:26:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9993 states to 9993 states and 13617 transitions. [2021-11-25 20:26:23,867 INFO L78 Accepts]: Start accepts. Automaton has 9993 states and 13617 transitions. Word has length 306 [2021-11-25 20:26:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:23,869 INFO L470 AbstractCegarLoop]: Abstraction has 9993 states and 13617 transitions. [2021-11-25 20:26:23,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 20:26:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9993 states and 13617 transitions. [2021-11-25 20:26:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-25 20:26:23,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:23,876 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:23,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:26:23,877 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1453615049, now seen corresponding path program 1 times [2021-11-25 20:26:23,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:23,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452593574] [2021-11-25 20:26:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:23,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2021-11-25 20:26:24,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452593574] [2021-11-25 20:26:24,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452593574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146492290] [2021-11-25 20:26:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:24,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:24,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:24,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:24,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:26:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:27,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 6408 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:26:27,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-11-25 20:26:28,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146492290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:28,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 20:26:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665637746] [2021-11-25 20:26:28,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:28,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:28,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:28,037 INFO L87 Difference]: Start difference. First operand 9993 states and 13617 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:26:30,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:33,542 WARN L534 Checker$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 20:26:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:35,410 INFO L93 Difference]: Finished difference Result 20537 states and 28129 transitions. [2021-11-25 20:26:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 347 [2021-11-25 20:26:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:35,461 INFO L225 Difference]: With dead ends: 20537 [2021-11-25 20:26:35,462 INFO L226 Difference]: Without dead ends: 10573 [2021-11-25 20:26:35,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:26:35,498 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 69 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:35,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 2948 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 20:26:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2021-11-25 20:26:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 10057. [2021-11-25 20:26:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 6135 states have (on average 1.239282803585982) internal successors, (7603), 6315 states have internal predecessors, (7603), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 882 states have return successors, (3072), 2994 states have call predecessors, (3072), 3038 states have call successors, (3072) [2021-11-25 20:26:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 13713 transitions. [2021-11-25 20:26:36,069 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 13713 transitions. Word has length 347 [2021-11-25 20:26:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:36,070 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 13713 transitions. [2021-11-25 20:26:36,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:26:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 13713 transitions. [2021-11-25 20:26:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-11-25 20:26:36,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:36,077 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:36,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:36,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:36,291 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash -684675384, now seen corresponding path program 1 times [2021-11-25 20:26:36,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874159393] [2021-11-25 20:26:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:36,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-11-25 20:26:37,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:37,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874159393] [2021-11-25 20:26:37,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874159393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:37,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:37,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:26:37,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576346230] [2021-11-25 20:26:37,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:37,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:37,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:37,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:37,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:37,233 INFO L87 Difference]: Start difference. First operand 10057 states and 13713 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:26:39,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:42,744 WARN L534 Checker$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 20:26:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:44,394 INFO L93 Difference]: Finished difference Result 20729 states and 28425 transitions. [2021-11-25 20:26:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 348 [2021-11-25 20:26:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:44,442 INFO L225 Difference]: With dead ends: 20729 [2021-11-25 20:26:44,442 INFO L226 Difference]: Without dead ends: 10701 [2021-11-25 20:26:44,472 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 20:26:44,473 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 45 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:44,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 2950 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-11-25 20:26:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10701 states. [2021-11-25 20:26:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10701 to 10073. [2021-11-25 20:26:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10073 states, 6151 states have (on average 1.238660380425947) internal successors, (7619), 6331 states have internal predecessors, (7619), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 882 states have return successors, (3072), 2994 states have call predecessors, (3072), 3038 states have call successors, (3072) [2021-11-25 20:26:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 13729 transitions. [2021-11-25 20:26:45,131 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 13729 transitions. Word has length 348 [2021-11-25 20:26:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:45,133 INFO L470 AbstractCegarLoop]: Abstraction has 10073 states and 13729 transitions. [2021-11-25 20:26:45,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:26:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 13729 transitions. [2021-11-25 20:26:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-25 20:26:45,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:45,141 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:45,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:26:45,141 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:45,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:45,142 INFO L85 PathProgramCache]: Analyzing trace with hash 396354847, now seen corresponding path program 1 times [2021-11-25 20:26:45,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:45,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599363631] [2021-11-25 20:26:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:45,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2021-11-25 20:26:46,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:46,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599363631] [2021-11-25 20:26:46,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599363631] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640672336] [2021-11-25 20:26:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:46,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:46,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:46,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:46,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:26:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:48,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 6427 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:26:48,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-11-25 20:26:49,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:26:49,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640672336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:49,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:26:49,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 20:26:49,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393548127] [2021-11-25 20:26:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:49,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:26:49,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:26:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:26:49,711 INFO L87 Difference]: Start difference. First operand 10073 states and 13729 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 20:26:51,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:56,500 WARN L534 Checker$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 20:26:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:59,473 INFO L93 Difference]: Finished difference Result 20196 states and 27591 transitions. [2021-11-25 20:26:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:26:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) Word has length 351 [2021-11-25 20:26:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:59,515 INFO L225 Difference]: With dead ends: 20196 [2021-11-25 20:26:59,516 INFO L226 Difference]: Without dead ends: 10152 [2021-11-25 20:26:59,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:26:59,545 INFO L933 BasicCegarLoop]: 1428 mSDtfsCounter, 6 mSDsluCounter, 5028 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:59,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5706 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1012 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 20:26:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2021-11-25 20:26:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10105. [2021-11-25 20:26:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10105 states, 6175 states have (on average 1.2377327935222673) internal successors, (7643), 6355 states have internal predecessors, (7643), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 890 states have return successors, (3104), 3002 states have call predecessors, (3104), 3038 states have call successors, (3104) [2021-11-25 20:27:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10105 states to 10105 states and 13785 transitions. [2021-11-25 20:27:00,038 INFO L78 Accepts]: Start accepts. Automaton has 10105 states and 13785 transitions. Word has length 351 [2021-11-25 20:27:00,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:00,039 INFO L470 AbstractCegarLoop]: Abstraction has 10105 states and 13785 transitions. [2021-11-25 20:27:00,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 20:27:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 10105 states and 13785 transitions. [2021-11-25 20:27:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-25 20:27:00,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:00,047 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 20:27:00,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:27:00,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:00,263 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1500584882, now seen corresponding path program 1 times [2021-11-25 20:27:00,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:00,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394659683] [2021-11-25 20:27:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:00,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-11-25 20:27:01,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:01,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394659683] [2021-11-25 20:27:01,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394659683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:27:01,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174934011] [2021-11-25 20:27:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:01,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:01,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:01,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:01,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:27:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:04,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 6548 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:27:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:27:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-25 20:27:05,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:27:05,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174934011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:05,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:27:05,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 20:27:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596451132] [2021-11-25 20:27:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:05,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:27:05,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:27:05,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:27:05,156 INFO L87 Difference]: Start difference. First operand 10105 states and 13785 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-25 20:27:07,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:11,799 WARN L534 Checker$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 20:27:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:14,388 INFO L93 Difference]: Finished difference Result 20244 states and 27663 transitions. [2021-11-25 20:27:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:27:14,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 359 [2021-11-25 20:27:14,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:14,561 INFO L225 Difference]: With dead ends: 20244 [2021-11-25 20:27:14,561 INFO L226 Difference]: Without dead ends: 10168 [2021-11-25 20:27:14,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:27:14,585 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 6 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5734 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:14,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5734 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1011 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 20:27:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10168 states. [2021-11-25 20:27:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 10121. [2021-11-25 20:27:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10121 states, 6191 states have (on average 1.237118397674043) internal successors, (7659), 6363 states have internal predecessors, (7659), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 890 states have return successors, (3104), 3010 states have call predecessors, (3104), 3038 states have call successors, (3104) [2021-11-25 20:27:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10121 states to 10121 states and 13801 transitions. [2021-11-25 20:27:15,089 INFO L78 Accepts]: Start accepts. Automaton has 10121 states and 13801 transitions. Word has length 359 [2021-11-25 20:27:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:15,090 INFO L470 AbstractCegarLoop]: Abstraction has 10121 states and 13801 transitions. [2021-11-25 20:27:15,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-25 20:27:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10121 states and 13801 transitions. [2021-11-25 20:27:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-25 20:27:15,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:15,098 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:15,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:27:15,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:27:15,311 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash -72070275, now seen corresponding path program 2 times [2021-11-25 20:27:15,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:15,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794859713] [2021-11-25 20:27:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:15,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2021-11-25 20:27:16,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:16,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794859713] [2021-11-25 20:27:16,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794859713] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:27:16,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192297683] [2021-11-25 20:27:16,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:27:16,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:16,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:16,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:27:18,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 20:27:18,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:27:18,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 4333 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:27:18,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:27:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-11-25 20:27:19,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:27:19,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192297683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:19,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:27:19,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-25 20:27:19,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016661442] [2021-11-25 20:27:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:19,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:27:19,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:27:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:27:19,658 INFO L87 Difference]: Start difference. First operand 10121 states and 13801 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-25 20:27:21,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:25,756 WARN L534 Checker$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 20:27:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:28,117 INFO L93 Difference]: Finished difference Result 20294 states and 27730 transitions. [2021-11-25 20:27:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:27:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 367 [2021-11-25 20:27:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:28,150 INFO L225 Difference]: With dead ends: 20294 [2021-11-25 20:27:28,150 INFO L226 Difference]: Without dead ends: 10202 [2021-11-25 20:27:28,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:27:28,180 INFO L933 BasicCegarLoop]: 1434 mSDtfsCounter, 8 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4280 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:28,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4280 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 765 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 20:27:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2021-11-25 20:27:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 10175. [2021-11-25 20:27:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10175 states, 6234 states have (on average 1.2367661212704524) internal successors, (7710), 6409 states have internal predecessors, (7710), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3018 states have call predecessors, (3116), 3046 states have call successors, (3116) [2021-11-25 20:27:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10175 states to 10175 states and 13872 transitions. [2021-11-25 20:27:28,649 INFO L78 Accepts]: Start accepts. Automaton has 10175 states and 13872 transitions. Word has length 367 [2021-11-25 20:27:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:28,650 INFO L470 AbstractCegarLoop]: Abstraction has 10175 states and 13872 transitions. [2021-11-25 20:27:28,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-25 20:27:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10175 states and 13872 transitions. [2021-11-25 20:27:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-25 20:27:28,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:28,658 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:28,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:27:28,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 20:27:28,867 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash 853268789, now seen corresponding path program 1 times [2021-11-25 20:27:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658058288] [2021-11-25 20:27:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:28,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-25 20:27:29,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658058288] [2021-11-25 20:27:29,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658058288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:27:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910481093] [2021-11-25 20:27:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:29,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:29,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:29,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:27:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:33,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 6645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:27:33,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:27:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2021-11-25 20:27:34,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:27:34,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910481093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:34,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:27:34,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 20:27:34,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817833464] [2021-11-25 20:27:34,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:34,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:27:34,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:34,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:27:34,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:27:34,076 INFO L87 Difference]: Start difference. First operand 10175 states and 13872 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 20:27:36,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:40,803 WARN L534 Checker$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 20:27:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:44,094 INFO L93 Difference]: Finished difference Result 20384 states and 27841 transitions. [2021-11-25 20:27:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:27:44,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) Word has length 369 [2021-11-25 20:27:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:44,121 INFO L225 Difference]: With dead ends: 20384 [2021-11-25 20:27:44,122 INFO L226 Difference]: Without dead ends: 10238 [2021-11-25 20:27:44,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:27:44,146 INFO L933 BasicCegarLoop]: 1433 mSDtfsCounter, 6 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:44,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5724 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1012 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2021-11-25 20:27:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2021-11-25 20:27:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 10191. [2021-11-25 20:27:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10191 states, 6250 states have (on average 1.23616) internal successors, (7726), 6417 states have internal predecessors, (7726), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3026 states have call predecessors, (3116), 3046 states have call successors, (3116) [2021-11-25 20:27:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10191 states to 10191 states and 13888 transitions. [2021-11-25 20:27:44,682 INFO L78 Accepts]: Start accepts. Automaton has 10191 states and 13888 transitions. Word has length 369 [2021-11-25 20:27:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:44,682 INFO L470 AbstractCegarLoop]: Abstraction has 10191 states and 13888 transitions. [2021-11-25 20:27:44,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 20:27:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 10191 states and 13888 transitions. [2021-11-25 20:27:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-11-25 20:27:44,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:44,690 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:44,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 20:27:44,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:44,903 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:44,904 INFO L85 PathProgramCache]: Analyzing trace with hash -933805852, now seen corresponding path program 2 times [2021-11-25 20:27:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:44,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739214756] [2021-11-25 20:27:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:44,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-25 20:27:46,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:46,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739214756] [2021-11-25 20:27:46,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739214756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:46,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:46,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:27:46,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713057579] [2021-11-25 20:27:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:46,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:27:46,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:27:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:27:46,007 INFO L87 Difference]: Start difference. First operand 10191 states and 13888 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 20:27:48,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:52,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:55,712 INFO L93 Difference]: Finished difference Result 20416 states and 27873 transitions. [2021-11-25 20:27:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:27:55,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) Word has length 377 [2021-11-25 20:27:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:55,738 INFO L225 Difference]: With dead ends: 20416 [2021-11-25 20:27:55,738 INFO L226 Difference]: Without dead ends: 10254 [2021-11-25 20:27:55,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:27:55,758 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 6 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5733 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:55,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5733 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1012 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 20:27:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10254 states. [2021-11-25 20:27:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10254 to 10207. [2021-11-25 20:27:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 6266 states have (on average 1.2355569741461858) internal successors, (7742), 6425 states have internal predecessors, (7742), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3034 states have call predecessors, (3116), 3046 states have call successors, (3116) [2021-11-25 20:27:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 13904 transitions. [2021-11-25 20:27:56,310 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 13904 transitions. Word has length 377 [2021-11-25 20:27:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:56,310 INFO L470 AbstractCegarLoop]: Abstraction has 10207 states and 13904 transitions. [2021-11-25 20:27:56,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 20:27:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 13904 transitions. [2021-11-25 20:27:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-25 20:27:56,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:56,318 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:56,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:27:56,318 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:56,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1893535597, now seen corresponding path program 1 times [2021-11-25 20:27:56,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:56,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301646544] [2021-11-25 20:27:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:56,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-11-25 20:27:57,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301646544] [2021-11-25 20:27:57,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301646544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:27:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137797626] [2021-11-25 20:27:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:57,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:57,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:57,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:57,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:28:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:01,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 6887 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:28:01,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:28:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2021-11-25 20:28:02,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:28:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-25 20:28:03,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137797626] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:28:03,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:28:03,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2021-11-25 20:28:03,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489090363] [2021-11-25 20:28:03,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:03,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:28:03,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:03,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:28:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:28:03,255 INFO L87 Difference]: Start difference. First operand 10207 states and 13904 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 20:28:05,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:08,935 WARN L534 Checker$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 20:28:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:11,305 INFO L93 Difference]: Finished difference Result 20425 states and 27943 transitions. [2021-11-25 20:28:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:28:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 385 [2021-11-25 20:28:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:11,338 INFO L225 Difference]: With dead ends: 20425 [2021-11-25 20:28:11,338 INFO L226 Difference]: Without dead ends: 10247 [2021-11-25 20:28:11,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:28:11,364 INFO L933 BasicCegarLoop]: 1429 mSDtfsCounter, 6 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:11,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2849 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 20:28:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2021-11-25 20:28:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 10217. [2021-11-25 20:28:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 6276 states have (on average 1.2351816443594645) internal successors, (7752), 6435 states have internal predecessors, (7752), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3034 states have call predecessors, (3116), 3046 states have call successors, (3116) [2021-11-25 20:28:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 13914 transitions. [2021-11-25 20:28:11,781 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 13914 transitions. Word has length 385 [2021-11-25 20:28:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:11,781 INFO L470 AbstractCegarLoop]: Abstraction has 10217 states and 13914 transitions. [2021-11-25 20:28:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-25 20:28:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 13914 transitions. [2021-11-25 20:28:11,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2021-11-25 20:28:11,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:11,789 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:11,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:28:12,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 20:28:12,003 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:28:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1586672857, now seen corresponding path program 1 times [2021-11-25 20:28:12,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:12,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793251322] [2021-11-25 20:28:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:12,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-25 20:28:13,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:13,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793251322] [2021-11-25 20:28:13,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793251322] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:28:13,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994632269] [2021-11-25 20:28:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:13,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:28:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:28:13,175 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:28:13,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:28:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:16,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 6927 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 20:28:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:29:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-25 20:29:31,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:29:31,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994632269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:29:31,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:29:31,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-25 20:29:31,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248052238] [2021-11-25 20:29:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:29:31,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:29:31,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:29:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:29:31,817 INFO L87 Difference]: Start difference. First operand 10217 states and 13914 transitions. Second operand has 6 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) [2021-11-25 20:29:33,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:39,596 WARN L534 Checker$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 20:29:42,879 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 20:29:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:49,093 INFO L93 Difference]: Finished difference Result 10227 states and 13923 transitions. [2021-11-25 20:29:49,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:29:49,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) Word has length 394 [2021-11-25 20:29:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:49,134 INFO L225 Difference]: With dead ends: 10227 [2021-11-25 20:29:49,134 INFO L226 Difference]: Without dead ends: 10225 [2021-11-25 20:29:49,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:29:49,140 INFO L933 BasicCegarLoop]: 1846 mSDtfsCounter, 1037 mSDsluCounter, 6576 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 7440 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:49,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1038 Valid, 7440 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1864 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2021-11-25 20:29:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10225 states. [2021-11-25 20:29:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10225 to 10217. [2021-11-25 20:29:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 6276 states have (on average 1.234544295729764) internal successors, (7748), 6435 states have internal predecessors, (7748), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3034 states have call predecessors, (3116), 3046 states have call successors, (3116) [2021-11-25 20:29:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 13910 transitions. [2021-11-25 20:29:49,506 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 13910 transitions. Word has length 394 [2021-11-25 20:29:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:49,507 INFO L470 AbstractCegarLoop]: Abstraction has 10217 states and 13910 transitions. [2021-11-25 20:29:49,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) [2021-11-25 20:29:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 13910 transitions. [2021-11-25 20:29:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-25 20:29:49,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:49,519 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:49,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:29:49,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 20:29:49,747 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:49,748 INFO L85 PathProgramCache]: Analyzing trace with hash 204196522, now seen corresponding path program 1 times [2021-11-25 20:29:49,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:49,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190128103] [2021-11-25 20:29:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:49,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-11-25 20:29:50,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:50,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190128103] [2021-11-25 20:29:50,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190128103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:29:50,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:29:50,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:29:50,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064102962] [2021-11-25 20:29:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:29:50,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:29:50,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:29:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:29:50,933 INFO L87 Difference]: Start difference. First operand 10217 states and 13910 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:29:53,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:29:56,578 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 20:29:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:58,504 INFO L93 Difference]: Finished difference Result 20243 states and 28037 transitions. [2021-11-25 20:29:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:29:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 415 [2021-11-25 20:29:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:58,536 INFO L225 Difference]: With dead ends: 20243 [2021-11-25 20:29:58,536 INFO L226 Difference]: Without dead ends: 12445 [2021-11-25 20:29:58,549 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 20:29:58,549 INFO L933 BasicCegarLoop]: 1671 mSDtfsCounter, 325 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:58,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 3115 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 526 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 20:29:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12445 states. [2021-11-25 20:29:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12445 to 10217. [2021-11-25 20:29:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 6276 states have (on average 1.234384958572339) internal successors, (7747), 6435 states have internal predecessors, (7747), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3034 states have call predecessors, (3116), 3046 states have call successors, (3116) [2021-11-25 20:29:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 13909 transitions. [2021-11-25 20:29:58,983 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 13909 transitions. Word has length 415 [2021-11-25 20:29:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:58,983 INFO L470 AbstractCegarLoop]: Abstraction has 10217 states and 13909 transitions. [2021-11-25 20:29:58,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 20:29:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 13909 transitions. [2021-11-25 20:29:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-25 20:29:58,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:58,994 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:58,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:29:58,995 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1391639039, now seen corresponding path program 1 times [2021-11-25 20:29:58,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:58,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220011524] [2021-11-25 20:29:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:58,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2021-11-25 20:30:00,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220011524] [2021-11-25 20:30:00,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220011524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:00,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:00,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:30:00,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864465511] [2021-11-25 20:30:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:00,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:30:00,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:00,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:30:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:30:00,416 INFO L87 Difference]: Start difference. First operand 10217 states and 13909 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-25 20:30:02,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:07,059 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 20:30:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:13,520 INFO L93 Difference]: Finished difference Result 22735 states and 30922 transitions. [2021-11-25 20:30:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:30:13,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 437 [2021-11-25 20:30:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:13,559 INFO L225 Difference]: With dead ends: 22735 [2021-11-25 20:30:13,559 INFO L226 Difference]: Without dead ends: 12547 [2021-11-25 20:30:13,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:30:13,578 INFO L933 BasicCegarLoop]: 2236 mSDtfsCounter, 1272 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 5235 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:13,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 5235 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1657 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2021-11-25 20:30:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12547 states. [2021-11-25 20:30:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12547 to 12535. [2021-11-25 20:30:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12535 states, 7727 states have (on average 1.2321729002200077) internal successors, (9521), 7921 states have internal predecessors, (9521), 3685 states have call successors, (3685), 1112 states have call predecessors, (3685), 1121 states have return successors, (3760), 3667 states have call predecessors, (3760), 3685 states have call successors, (3760) [2021-11-25 20:30:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12535 states to 12535 states and 16966 transitions. [2021-11-25 20:30:14,150 INFO L78 Accepts]: Start accepts. Automaton has 12535 states and 16966 transitions. Word has length 437 [2021-11-25 20:30:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:14,151 INFO L470 AbstractCegarLoop]: Abstraction has 12535 states and 16966 transitions. [2021-11-25 20:30:14,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-25 20:30:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 12535 states and 16966 transitions. [2021-11-25 20:30:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-25 20:30:14,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:14,161 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 13, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:14,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:30:14,161 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:30:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash -408503384, now seen corresponding path program 1 times [2021-11-25 20:30:14,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:14,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422711185] [2021-11-25 20:30:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:14,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2021-11-25 20:30:15,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:15,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422711185] [2021-11-25 20:30:15,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422711185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:15,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:15,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:30:15,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537704681] [2021-11-25 20:30:15,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:15,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:30:15,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:30:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:30:15,450 INFO L87 Difference]: Start difference. First operand 12535 states and 16966 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-25 20:30:17,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:20,603 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 20:30:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:23,380 INFO L93 Difference]: Finished difference Result 25864 states and 35200 transitions. [2021-11-25 20:30:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:30:23,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 444 [2021-11-25 20:30:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:23,500 INFO L225 Difference]: With dead ends: 25864 [2021-11-25 20:30:23,500 INFO L226 Difference]: Without dead ends: 16108 [2021-11-25 20:30:23,520 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 20:30:23,521 INFO L933 BasicCegarLoop]: 1777 mSDtfsCounter, 1462 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:23,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 3068 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 488 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 20:30:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16108 states. [2021-11-25 20:30:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16108 to 16095. [2021-11-25 20:30:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16095 states, 9940 states have (on average 1.2351106639839033) internal successors, (12277), 10198 states have internal predecessors, (12277), 4737 states have call successors, (4737), 1410 states have call predecessors, (4737), 1416 states have return successors, (4840), 4697 states have call predecessors, (4840), 4737 states have call successors, (4840) [2021-11-25 20:30:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 21854 transitions. [2021-11-25 20:30:24,257 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 21854 transitions. Word has length 444 [2021-11-25 20:30:24,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:24,258 INFO L470 AbstractCegarLoop]: Abstraction has 16095 states and 21854 transitions. [2021-11-25 20:30:24,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-25 20:30:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 21854 transitions. [2021-11-25 20:30:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-25 20:30:24,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:24,265 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 13, 13, 8, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:24,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:30:24,265 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:30:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash -661096541, now seen corresponding path program 1 times [2021-11-25 20:30:24,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:24,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70712585] [2021-11-25 20:30:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:24,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-25 20:30:25,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:25,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70712585] [2021-11-25 20:30:25,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70712585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:25,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849109821] [2021-11-25 20:30:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:25,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:25,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:25,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:25,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:30:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:29,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 8406 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:30:29,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 298 proven. 1 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2021-11-25 20:30:31,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:30:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2021-11-25 20:30:32,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849109821] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:32,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:30:32,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2021-11-25 20:30:32,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932820507] [2021-11-25 20:30:32,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:32,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:30:32,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:30:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:30:32,105 INFO L87 Difference]: Start difference. First operand 16095 states and 21854 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2021-11-25 20:30:34,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:30:37,917 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 20:30:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:40,783 INFO L93 Difference]: Finished difference Result 37437 states and 51742 transitions. [2021-11-25 20:30:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:30:40,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 455 [2021-11-25 20:30:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:40,867 INFO L225 Difference]: With dead ends: 37437 [2021-11-25 20:30:40,867 INFO L226 Difference]: Without dead ends: 21371 [2021-11-25 20:30:40,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:30:40,910 INFO L933 BasicCegarLoop]: 1921 mSDtfsCounter, 351 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:40,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 3468 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 600 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-25 20:30:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21371 states. [2021-11-25 20:30:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21371 to 16103. [2021-11-25 20:30:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16103 states, 9948 states have (on average 1.2349215922798553) internal successors, (12285), 10206 states have internal predecessors, (12285), 4737 states have call successors, (4737), 1410 states have call predecessors, (4737), 1416 states have return successors, (4840), 4697 states have call predecessors, (4840), 4737 states have call successors, (4840) [2021-11-25 20:30:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 21862 transitions. [2021-11-25 20:30:41,747 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 21862 transitions. Word has length 455 [2021-11-25 20:30:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:41,748 INFO L470 AbstractCegarLoop]: Abstraction has 16103 states and 21862 transitions. [2021-11-25 20:30:41,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2021-11-25 20:30:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 21862 transitions. [2021-11-25 20:30:41,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-25 20:30:41,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:41,755 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:41,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:30:41,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-25 20:30:41,956 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:30:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:41,957 INFO L85 PathProgramCache]: Analyzing trace with hash -31763452, now seen corresponding path program 1 times [2021-11-25 20:30:41,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:41,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730647670] [2021-11-25 20:30:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:41,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2021-11-25 20:30:43,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:43,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730647670] [2021-11-25 20:30:43,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730647670] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:43,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886393864] [2021-11-25 20:30:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:43,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:43,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:43,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:43,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8796f6-efec-40be-a0b9-97cbb61104c8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:30:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:48,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 8438 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 20:30:48,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2021-11-25 20:32:10,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:32:14,100 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2021-11-25 20:32:19,943 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions. [2021-11-25 20:32:20,018 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 16383 disjunctions. This might take some time... [2021-11-25 20:32:45,388 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 16383 disjunctions. [2021-11-25 20:32:45,502 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 32767 disjunctions. This might take some time...