./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-atheros-atl1e-atl1e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P --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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:37:26,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:37:26,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:37:26,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:37:26,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:37:26,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:37:26,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:37:26,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:37:26,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:37:26,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:37:26,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:37:26,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:37:26,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:37:26,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:37:26,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:37:26,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:37:26,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:37:26,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:37:26,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:37:26,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:37:26,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:37:26,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:37:26,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:37:26,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:37:26,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:37:26,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:37:26,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:37:26,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:37:26,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:37:26,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:37:26,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:37:26,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:37:26,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:37:26,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:37:26,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:37:26,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:37:26,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:37:26,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:37:26,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:37:26,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:37:26,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:37:26,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:37:26,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:37:26,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:37:26,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:37:26,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:37:26,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:37:26,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:37:26,373 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:37:26,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:37:26,373 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:37:26,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:37:26,375 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:37:26,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:37:26,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:37:26,376 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:37:26,376 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:37:26,376 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:37:26,376 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:37:26,377 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:37:26,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:37:26,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:37:26,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:37:26,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:37:26,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:37:26,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:37:26,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:37:26,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:37:26,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:37:26,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:37:26,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:37:26,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:26,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:37:26,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:37:26,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:37:26,383 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:37:26,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:37:26,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:37:26,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:37:26,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:37:26,385 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_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2021-11-21 01:37:26,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:37:26,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:37:26,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:37:26,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:37:26,744 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:37:26,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-21 01:37:26,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/data/c30412947/0350606fc42d452d88ddf12bea987fc6/FLAGfe947d534 [2021-11-21 01:37:27,763 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:37:27,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-21 01:37:27,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/data/c30412947/0350606fc42d452d88ddf12bea987fc6/FLAGfe947d534 [2021-11-21 01:37:28,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/data/c30412947/0350606fc42d452d88ddf12bea987fc6 [2021-11-21 01:37:28,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:37:28,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:37:28,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:28,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:37:28,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:37:28,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:28,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc272b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:28, skipping insertion in model container [2021-11-21 01:37:28,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:28" (1/1) ... [2021-11-21 01:37:28,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:37:28,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:37:32,927 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_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-21 01:37:32,937 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_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-21 01:37:32,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:33,030 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:37:33,542 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_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-21 01:37:33,543 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_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-21 01:37:33,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:33,832 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:37:33,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33 WrapperNode [2021-11-21 01:37:33,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:33,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:33,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:37:33,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:37:33,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:33,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,231 INFO L137 Inliner]: procedures = 623, calls = 3565, calls flagged for inlining = 310, calls inlined = 274, statements flattened = 8094 [2021-11-21 01:37:34,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:34,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:37:34,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:37:34,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:37:34,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:37:34,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:37:34,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:37:34,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:37:34,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (1/1) ... [2021-11-21 01:37:34,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:34,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:34,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:37:34,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:37:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:37:34,818 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:37:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:37:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:37:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2021-11-21 01:37:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2021-11-21 01:37:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:37:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:37:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2021-11-21 01:37:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2021-11-21 01:37:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 01:37:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 01:37:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:37:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:37:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:37:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:37:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2021-11-21 01:37:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2021-11-21 01:37:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-21 01:37:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-21 01:37:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:37:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:37:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:37:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:37:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:37:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:37:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:37:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:37:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2021-11-21 01:37:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2021-11-21 01:37:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2021-11-21 01:37:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2021-11-21 01:37:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2021-11-21 01:37:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2021-11-21 01:37:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2021-11-21 01:37:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2021-11-21 01:37:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:37:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:37:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:37:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:37:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2021-11-21 01:37:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2021-11-21 01:37:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:37:34,827 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:37:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:37:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:37:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:37:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:37:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:37:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:37:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:37:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:37:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2021-11-21 01:37:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2021-11-21 01:37:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:37:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:37:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 01:37:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 01:37:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:37:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2021-11-21 01:37:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2021-11-21 01:37:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-21 01:37:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-21 01:37:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2021-11-21 01:37:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2021-11-21 01:37:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 01:37:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 01:37:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2021-11-21 01:37:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2021-11-21 01:37:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 01:37:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 01:37:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:37:34,836 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:37:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:37:34,836 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:37:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:37:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2021-11-21 01:37:34,837 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2021-11-21 01:37:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:37:34,837 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:37:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:37:34,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:37:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2021-11-21 01:37:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2021-11-21 01:37:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:37:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:37:34,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:37:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:37:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:37:34,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:37:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 01:37:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 01:37:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:37:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:37:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:37:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:37:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:37:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:37:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:37:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:37:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-21 01:37:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-21 01:37:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:37:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:37:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:37:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:37:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2021-11-21 01:37:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2021-11-21 01:37:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:37:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:37:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:37:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:37:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2021-11-21 01:37:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2021-11-21 01:37:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:37:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2021-11-21 01:37:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2021-11-21 01:37:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:37:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:37:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:37:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:37:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:37:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 01:37:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 01:37:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:37:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:37:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:37:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:37:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:37:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:37:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 01:37:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 01:37:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:37:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:37:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 01:37:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 01:37:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-21 01:37:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-21 01:37:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2021-11-21 01:37:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2021-11-21 01:37:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2021-11-21 01:37:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2021-11-21 01:37:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:37:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:37:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-21 01:37:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-21 01:37:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:37:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:37:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:37:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:37:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:37:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:37:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:37:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:37:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2021-11-21 01:37:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2021-11-21 01:37:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 01:37:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 01:37:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:37:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:37:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:37:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:37:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2021-11-21 01:37:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2021-11-21 01:37:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-21 01:37:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-21 01:37:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-21 01:37:34,866 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-21 01:37:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:37:34,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:37:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 01:37:34,866 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 01:37:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:37:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:37:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:37:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:37:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:37:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:37:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:37:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:37:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:37:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:37:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:37:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:37:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:37:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:37:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2021-11-21 01:37:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2021-11-21 01:37:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-21 01:37:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-21 01:37:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:37:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:37:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 01:37:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 01:37:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 01:37:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 01:37:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-21 01:37:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-21 01:37:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:37:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:37:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:37:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:37:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2021-11-21 01:37:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2021-11-21 01:37:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:37:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:37:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:37:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:37:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:37:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:37:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:37:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 01:37:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 01:37:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:37:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:37:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2021-11-21 01:37:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2021-11-21 01:37:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2021-11-21 01:37:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2021-11-21 01:37:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:37:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2021-11-21 01:37:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2021-11-21 01:37:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2021-11-21 01:37:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2021-11-21 01:37:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 01:37:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 01:37:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2021-11-21 01:37:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2021-11-21 01:37:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2021-11-21 01:37:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2021-11-21 01:37:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:37:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2021-11-21 01:37:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2021-11-21 01:37:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:37:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:37:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:37:34,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:37:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:37:34,882 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:37:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:37:34,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:37:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:37:34,882 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:37:34,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:37:34,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:37:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2021-11-21 01:37:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2021-11-21 01:37:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2021-11-21 01:37:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2021-11-21 01:37:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2021-11-21 01:37:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2021-11-21 01:37:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:37:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:37:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 01:37:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 01:37:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2021-11-21 01:37:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2021-11-21 01:37:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:37:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:37:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 01:37:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 01:37:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2021-11-21 01:37:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2021-11-21 01:37:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:37:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:37:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:37:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2021-11-21 01:37:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2021-11-21 01:37:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:37:34,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:37:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2021-11-21 01:37:34,888 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2021-11-21 01:37:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2021-11-21 01:37:34,888 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2021-11-21 01:37:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:37:34,889 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:37:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 01:37:34,889 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 01:37:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2021-11-21 01:37:34,889 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2021-11-21 01:37:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2021-11-21 01:37:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2021-11-21 01:37:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:37:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:37:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2021-11-21 01:37:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2021-11-21 01:37:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 01:37:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 01:37:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:37:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:37:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:37:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2021-11-21 01:37:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2021-11-21 01:37:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:37:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:37:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:37:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:37:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2021-11-21 01:37:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2021-11-21 01:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-21 01:37:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-21 01:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:37:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 01:37:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 01:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:37:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2021-11-21 01:37:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2021-11-21 01:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2021-11-21 01:37:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2021-11-21 01:37:36,093 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:37:36,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:37:36,462 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:37:46,538 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:37:46,676 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:37:48,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:37:48,456 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:37:48,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:48 BoogieIcfgContainer [2021-11-21 01:37:48,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:37:48,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:37:48,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:37:48,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:37:48,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:37:28" (1/3) ... [2021-11-21 01:37:48,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714f56d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:48, skipping insertion in model container [2021-11-21 01:37:48,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:33" (2/3) ... [2021-11-21 01:37:48,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714f56d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:48, skipping insertion in model container [2021-11-21 01:37:48,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:48" (3/3) ... [2021-11-21 01:37:48,476 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-21 01:37:48,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:37:48,483 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:37:48,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:37:48,568 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 [2021-11-21 01:37:48,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:37:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 2192 states, 1276 states have (on average 1.2758620689655173) internal successors, (1628), 1301 states have internal predecessors, (1628), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-21 01:37:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-21 01:37:48,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:48,677 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:48,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1268115972, now seen corresponding path program 1 times [2021-11-21 01:37:48,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:48,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960240854] [2021-11-21 01:37:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:48,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-21 01:37:49,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:49,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960240854] [2021-11-21 01:37:49,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960240854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:49,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:49,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:37:49,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562319910] [2021-11-21 01:37:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:49,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:37:49,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:37:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:49,548 INFO L87 Difference]: Start difference. First operand has 2192 states, 1276 states have (on average 1.2758620689655173) internal successors, (1628), 1301 states have internal predecessors, (1628), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 01:37:53,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:55,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:58,504 INFO L93 Difference]: Finished difference Result 5736 states and 8237 transitions. [2021-11-21 01:37:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 202 [2021-11-21 01:37:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:58,563 INFO L225 Difference]: With dead ends: 5736 [2021-11-21 01:37:58,563 INFO L226 Difference]: Without dead ends: 3503 [2021-11-21 01:37:58,588 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 [2021-11-21 01:37:58,592 INFO L933 BasicCegarLoop]: 3243 mSDtfsCounter, 1964 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 5942 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:58,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1964 Valid, 5942 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 817 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 01:37:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2021-11-21 01:37:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3499. [2021-11-21 01:37:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 2059 states have (on average 1.2637202525497815) internal successors, (2602), 2101 states have internal predecessors, (2602), 1182 states have call successors, (1182), 258 states have call predecessors, (1182), 257 states have return successors, (1182), 1176 states have call predecessors, (1182), 1182 states have call successors, (1182) [2021-11-21 01:37:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4966 transitions. [2021-11-21 01:37:58,970 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4966 transitions. Word has length 202 [2021-11-21 01:37:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:58,974 INFO L470 AbstractCegarLoop]: Abstraction has 3499 states and 4966 transitions. [2021-11-21 01:37:58,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 01:37:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4966 transitions. [2021-11-21 01:37:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-21 01:37:58,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:58,988 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:58,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:37:58,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2060626588, now seen corresponding path program 1 times [2021-11-21 01:37:58,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100448595] [2021-11-21 01:37:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:58,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:59,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:37:59,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058167404] [2021-11-21 01:37:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:59,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:59,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:59,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:38:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:00,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 3650 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:38:00,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-21 01:38:01,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:01,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:01,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100448595] [2021-11-21 01:38:01,146 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:01,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058167404] [2021-11-21 01:38:01,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058167404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:01,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:01,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:01,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792620511] [2021-11-21 01:38:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:01,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:01,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:01,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:01,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:01,151 INFO L87 Difference]: Start difference. First operand 3499 states and 4966 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:38:06,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:08,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:10,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:12,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:13,853 INFO L93 Difference]: Finished difference Result 9132 states and 12925 transitions. [2021-11-21 01:38:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:13,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 197 [2021-11-21 01:38:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:13,908 INFO L225 Difference]: With dead ends: 9132 [2021-11-21 01:38:13,908 INFO L226 Difference]: Without dead ends: 5662 [2021-11-21 01:38:13,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:13,928 INFO L933 BasicCegarLoop]: 3803 mSDtfsCounter, 2120 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 6414 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:13,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2120 Valid, 6414 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 966 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2021-11-21 01:38:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-11-21 01:38:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5658. [2021-11-21 01:38:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 3349 states have (on average 1.260973424902956) internal successors, (4223), 3409 states have internal predecessors, (4223), 1873 states have call successors, (1873), 436 states have call predecessors, (1873), 435 states have return successors, (1873), 1864 states have call predecessors, (1873), 1873 states have call successors, (1873) [2021-11-21 01:38:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 7969 transitions. [2021-11-21 01:38:14,287 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 7969 transitions. Word has length 197 [2021-11-21 01:38:14,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:14,288 INFO L470 AbstractCegarLoop]: Abstraction has 5658 states and 7969 transitions. [2021-11-21 01:38:14,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:38:14,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 7969 transitions. [2021-11-21 01:38:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-21 01:38:14,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:14,298 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2021-11-21 01:38:14,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:14,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:14,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -90894830, now seen corresponding path program 1 times [2021-11-21 01:38:14,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:14,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346916731] [2021-11-21 01:38:14,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:14,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-21 01:38:15,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:15,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346916731] [2021-11-21 01:38:15,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346916731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:15,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:15,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:15,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281385679] [2021-11-21 01:38:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:15,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:15,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:15,064 INFO L87 Difference]: Start difference. First operand 5658 states and 7969 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:38:19,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:21,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:23,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:26,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:27,530 INFO L93 Difference]: Finished difference Result 13133 states and 18464 transitions. [2021-11-21 01:38:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 238 [2021-11-21 01:38:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:27,590 INFO L225 Difference]: With dead ends: 13133 [2021-11-21 01:38:27,590 INFO L226 Difference]: Without dead ends: 7504 [2021-11-21 01:38:27,619 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 [2021-11-21 01:38:27,620 INFO L933 BasicCegarLoop]: 4041 mSDtfsCounter, 2053 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 6696 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:27,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2056 Valid, 6696 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1000 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 01:38:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2021-11-21 01:38:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 7499. [2021-11-21 01:38:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7499 states, 4452 states have (on average 1.2607816711590296) internal successors, (5613), 4531 states have internal predecessors, (5613), 2458 states have call successors, (2458), 589 states have call predecessors, (2458), 588 states have return successors, (2461), 2445 states have call predecessors, (2461), 2458 states have call successors, (2461) [2021-11-21 01:38:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7499 states to 7499 states and 10532 transitions. [2021-11-21 01:38:28,056 INFO L78 Accepts]: Start accepts. Automaton has 7499 states and 10532 transitions. Word has length 238 [2021-11-21 01:38:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:28,058 INFO L470 AbstractCegarLoop]: Abstraction has 7499 states and 10532 transitions. [2021-11-21 01:38:28,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:38:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7499 states and 10532 transitions. [2021-11-21 01:38:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-21 01:38:28,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:28,069 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 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] [2021-11-21 01:38:28,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:38:28,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash -906062969, now seen corresponding path program 1 times [2021-11-21 01:38:28,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:28,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221843266] [2021-11-21 01:38:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:28,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:28,290 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:28,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146087851] [2021-11-21 01:38:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:28,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:28,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:28,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:38:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:29,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 3906 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:38:29,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2021-11-21 01:38:30,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:30,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:30,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221843266] [2021-11-21 01:38:30,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:30,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146087851] [2021-11-21 01:38:30,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146087851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:30,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:30,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:30,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138688620] [2021-11-21 01:38:30,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:30,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:30,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:30,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:30,038 INFO L87 Difference]: Start difference. First operand 7499 states and 10532 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 01:38:35,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:37,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:38,935 INFO L93 Difference]: Finished difference Result 17208 states and 24146 transitions. [2021-11-21 01:38:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:38,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 244 [2021-11-21 01:38:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:39,010 INFO L225 Difference]: With dead ends: 17208 [2021-11-21 01:38:39,011 INFO L226 Difference]: Without dead ends: 9738 [2021-11-21 01:38:39,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:39,048 INFO L933 BasicCegarLoop]: 3779 mSDtfsCounter, 2114 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2114 Valid, 6382 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 961 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 01:38:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2021-11-21 01:38:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 9732. [2021-11-21 01:38:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9732 states, 5785 states have (on average 1.2599827139152981) internal successors, (7289), 5883 states have internal predecessors, (7289), 3166 states have call successors, (3166), 781 states have call predecessors, (3166), 780 states have return successors, (3169), 3149 states have call predecessors, (3169), 3166 states have call successors, (3169) [2021-11-21 01:38:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9732 states to 9732 states and 13624 transitions. [2021-11-21 01:38:39,622 INFO L78 Accepts]: Start accepts. Automaton has 9732 states and 13624 transitions. Word has length 244 [2021-11-21 01:38:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:39,623 INFO L470 AbstractCegarLoop]: Abstraction has 9732 states and 13624 transitions. [2021-11-21 01:38:39,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 01:38:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9732 states and 13624 transitions. [2021-11-21 01:38:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-21 01:38:39,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:39,637 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 14, 14, 14, 14, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:39,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:39,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:39,851 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash 446157647, now seen corresponding path program 1 times [2021-11-21 01:38:39,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:39,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875491494] [2021-11-21 01:38:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:39,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:39,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:39,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702627277] [2021-11-21 01:38:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:39,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:39,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:39,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:38:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:41,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 4086 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:38:41,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-21 01:38:41,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:41,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:41,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875491494] [2021-11-21 01:38:41,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:41,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702627277] [2021-11-21 01:38:41,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702627277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:41,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:41,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:41,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373304802] [2021-11-21 01:38:41,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:41,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:41,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:41,810 INFO L87 Difference]: Start difference. First operand 9732 states and 13624 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 01:38:44,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:46,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:48,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:50,698 INFO L93 Difference]: Finished difference Result 21461 states and 30014 transitions. [2021-11-21 01:38:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:50,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 285 [2021-11-21 01:38:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:50,762 INFO L225 Difference]: With dead ends: 21461 [2021-11-21 01:38:50,762 INFO L226 Difference]: Without dead ends: 11758 [2021-11-21 01:38:50,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:50,804 INFO L933 BasicCegarLoop]: 3283 mSDtfsCounter, 2329 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:50,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2329 Valid, 5752 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 818 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-21 01:38:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11758 states. [2021-11-21 01:38:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11758 to 11753. [2021-11-21 01:38:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11753 states, 6995 states have (on average 1.2623302358827735) internal successors, (8830), 7113 states have internal predecessors, (8830), 3790 states have call successors, (3790), 968 states have call predecessors, (3790), 967 states have return successors, (3793), 3768 states have call predecessors, (3793), 3790 states have call successors, (3793) [2021-11-21 01:38:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11753 states to 11753 states and 16413 transitions. [2021-11-21 01:38:51,366 INFO L78 Accepts]: Start accepts. Automaton has 11753 states and 16413 transitions. Word has length 285 [2021-11-21 01:38:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:51,371 INFO L470 AbstractCegarLoop]: Abstraction has 11753 states and 16413 transitions. [2021-11-21 01:38:51,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 01:38:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11753 states and 16413 transitions. [2021-11-21 01:38:51,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-21 01:38:51,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:51,387 INFO L514 BasicCegarLoop]: trace histogram [21, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:51,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:51,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:51,603 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2133289966, now seen corresponding path program 1 times [2021-11-21 01:38:51,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:51,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040531692] [2021-11-21 01:38:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:51,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:51,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234437298] [2021-11-21 01:38:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:51,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:51,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:51,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:38:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:53,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 4155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:38:53,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2021-11-21 01:38:53,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:53,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040531692] [2021-11-21 01:38:53,908 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:53,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234437298] [2021-11-21 01:38:53,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234437298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:53,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:53,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:53,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873742720] [2021-11-21 01:38:53,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:53,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:53,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:53,911 INFO L87 Difference]: Start difference. First operand 11753 states and 16413 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 01:38:56,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:38:58,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:00,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:02,192 INFO L93 Difference]: Finished difference Result 27294 states and 38144 transitions. [2021-11-21 01:39:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:02,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 313 [2021-11-21 01:39:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:02,270 INFO L225 Difference]: With dead ends: 27294 [2021-11-21 01:39:02,270 INFO L226 Difference]: Without dead ends: 15570 [2021-11-21 01:39:02,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:02,312 INFO L933 BasicCegarLoop]: 3809 mSDtfsCounter, 2816 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:02,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 5937 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 897 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 01:39:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15570 states. [2021-11-21 01:39:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15570 to 15563. [2021-11-21 01:39:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 9281 states have (on average 1.2657041267104838) internal successors, (11747), 9439 states have internal predecessors, (11747), 5000 states have call successors, (5000), 1282 states have call predecessors, (5000), 1281 states have return successors, (5003), 4970 states have call predecessors, (5003), 5000 states have call successors, (5003) [2021-11-21 01:39:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 21750 transitions. [2021-11-21 01:39:03,234 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 21750 transitions. Word has length 313 [2021-11-21 01:39:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:03,235 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 21750 transitions. [2021-11-21 01:39:03,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 01:39:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 21750 transitions. [2021-11-21 01:39:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-21 01:39:03,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:03,252 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:03,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:03,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 01:39:03,471 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:03,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1352127951, now seen corresponding path program 1 times [2021-11-21 01:39:03,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:03,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085579235] [2021-11-21 01:39:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:03,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:03,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:39:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250669293] [2021-11-21 01:39:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:03,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:03,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:39:03,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:39:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:04,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:39:04,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-21 01:39:05,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:39:05,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085579235] [2021-11-21 01:39:05,548 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:39:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250669293] [2021-11-21 01:39:05,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250669293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:05,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:05,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:39:05,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085489691] [2021-11-21 01:39:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:05,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:39:05,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:39:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:05,550 INFO L87 Difference]: Start difference. First operand 15563 states and 21750 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 01:39:09,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:11,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:17,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:19,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:23,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:24,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:24,942 INFO L93 Difference]: Finished difference Result 35236 states and 49272 transitions. [2021-11-21 01:39:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:39:24,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 334 [2021-11-21 01:39:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:25,044 INFO L225 Difference]: With dead ends: 35236 [2021-11-21 01:39:25,044 INFO L226 Difference]: Without dead ends: 19702 [2021-11-21 01:39:25,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:25,101 INFO L933 BasicCegarLoop]: 4497 mSDtfsCounter, 2399 mSDsluCounter, 13225 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 16047 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:25,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 16047 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2458 Invalid, 3 Unknown, 0 Unchecked, 18.8s Time] [2021-11-21 01:39:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19702 states. [2021-11-21 01:39:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19702 to 19693. [2021-11-21 01:39:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19693 states, 11744 states have (on average 1.2646457765667576) internal successors, (14852), 11951 states have internal predecessors, (14852), 6319 states have call successors, (6319), 1628 states have call predecessors, (6319), 1629 states have return successors, (6332), 6282 states have call predecessors, (6332), 6319 states have call successors, (6332) [2021-11-21 01:39:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19693 states to 19693 states and 27503 transitions. [2021-11-21 01:39:26,266 INFO L78 Accepts]: Start accepts. Automaton has 19693 states and 27503 transitions. Word has length 334 [2021-11-21 01:39:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:26,267 INFO L470 AbstractCegarLoop]: Abstraction has 19693 states and 27503 transitions. [2021-11-21 01:39:26,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 01:39:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 19693 states and 27503 transitions. [2021-11-21 01:39:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-21 01:39:26,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:26,282 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:26,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:26,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:26,499 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1421071445, now seen corresponding path program 1 times [2021-11-21 01:39:26,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:26,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760444421] [2021-11-21 01:39:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:26,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:26,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:39:26,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352050357] [2021-11-21 01:39:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:26,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:26,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:39:26,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:39:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:27,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 4177 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:39:27,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-11-21 01:39:28,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:39:28,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:28,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760444421] [2021-11-21 01:39:28,454 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:39:28,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352050357] [2021-11-21 01:39:28,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352050357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:28,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:28,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:39:28,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824892608] [2021-11-21 01:39:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:28,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:39:28,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:39:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:28,456 INFO L87 Difference]: Start difference. First operand 19693 states and 27503 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 01:39:32,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:36,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:38,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:40,610 INFO L93 Difference]: Finished difference Result 41692 states and 58137 transitions. [2021-11-21 01:39:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:39:40,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 335 [2021-11-21 01:39:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:40,725 INFO L225 Difference]: With dead ends: 41692 [2021-11-21 01:39:40,725 INFO L226 Difference]: Without dead ends: 22028 [2021-11-21 01:39:40,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:39:40,801 INFO L933 BasicCegarLoop]: 3411 mSDtfsCounter, 2501 mSDsluCounter, 10447 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 12694 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:40,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2501 Valid, 12694 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1704 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-11-21 01:39:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22028 states. [2021-11-21 01:39:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22028 to 22016. [2021-11-21 01:39:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22016 states, 13124 states have (on average 1.2646296860713198) internal successors, (16597), 13356 states have internal predecessors, (16597), 7021 states have call successors, (7021), 1869 states have call predecessors, (7021), 1870 states have return successors, (7034), 6978 states have call predecessors, (7034), 7021 states have call successors, (7034) [2021-11-21 01:39:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22016 states to 22016 states and 30652 transitions. [2021-11-21 01:39:42,218 INFO L78 Accepts]: Start accepts. Automaton has 22016 states and 30652 transitions. Word has length 335 [2021-11-21 01:39:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:42,220 INFO L470 AbstractCegarLoop]: Abstraction has 22016 states and 30652 transitions. [2021-11-21 01:39:42,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 01:39:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 22016 states and 30652 transitions. [2021-11-21 01:39:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-21 01:39:42,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:42,243 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:42,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:42,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:42,463 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1332969301, now seen corresponding path program 1 times [2021-11-21 01:39:42,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:42,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730174943] [2021-11-21 01:39:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:42,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:42,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:39:42,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897037661] [2021-11-21 01:39:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:42,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:42,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:42,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:39:42,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:39:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:44,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 4188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:39:44,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2021-11-21 01:39:45,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:39:45,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:45,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730174943] [2021-11-21 01:39:45,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:39:45,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897037661] [2021-11-21 01:39:45,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897037661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:45,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:45,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:39:45,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577331231] [2021-11-21 01:39:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:45,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:39:45,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:39:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:39:45,052 INFO L87 Difference]: Start difference. First operand 22016 states and 30652 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, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 01:39:48,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:50,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:53,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:57,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:58,816 INFO L93 Difference]: Finished difference Result 45912 states and 63890 transitions. [2021-11-21 01:39:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:39:58,817 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, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 342 [2021-11-21 01:39:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:58,882 INFO L225 Difference]: With dead ends: 45912 [2021-11-21 01:39:58,882 INFO L226 Difference]: Without dead ends: 23925 [2021-11-21 01:39:59,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:39:59,027 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 2344 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 85 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 7863 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:59,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 7863 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2335 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2021-11-21 01:39:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23925 states. [2021-11-21 01:40:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23925 to 23870. [2021-11-21 01:40:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23870 states, 14223 states have (on average 1.2637277648878578) internal successors, (17974), 14473 states have internal predecessors, (17974), 7605 states have call successors, (7605), 2040 states have call predecessors, (7605), 2041 states have return successors, (7621), 7559 states have call predecessors, (7621), 7605 states have call successors, (7621) [2021-11-21 01:40:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23870 states to 23870 states and 33200 transitions. [2021-11-21 01:40:00,255 INFO L78 Accepts]: Start accepts. Automaton has 23870 states and 33200 transitions. Word has length 342 [2021-11-21 01:40:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:00,256 INFO L470 AbstractCegarLoop]: Abstraction has 23870 states and 33200 transitions. [2021-11-21 01:40:00,256 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, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 01:40:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 23870 states and 33200 transitions. [2021-11-21 01:40:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-11-21 01:40:00,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:00,274 INFO L514 BasicCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:00,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:00,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:00,492 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash -627661403, now seen corresponding path program 1 times [2021-11-21 01:40:00,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:00,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710604848] [2021-11-21 01:40:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:00,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:00,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:40:00,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576088158] [2021-11-21 01:40:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:00,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:00,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:00,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:40:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:40:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:01,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 4410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:40:01,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2021-11-21 01:40:02,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:40:02,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:02,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710604848] [2021-11-21 01:40:02,664 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:40:02,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576088158] [2021-11-21 01:40:02,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576088158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:02,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:02,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:40:02,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388911199] [2021-11-21 01:40:02,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:02,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:40:02,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:40:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:02,667 INFO L87 Difference]: Start difference. First operand 23870 states and 33200 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:40:04,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:07,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:08,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:12,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:15,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:19,104 INFO L93 Difference]: Finished difference Result 49648 states and 69072 transitions. [2021-11-21 01:40:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:40:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 389 [2021-11-21 01:40:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:19,193 INFO L225 Difference]: With dead ends: 49648 [2021-11-21 01:40:19,193 INFO L226 Difference]: Without dead ends: 25807 [2021-11-21 01:40:19,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:19,244 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 2400 mSDsluCounter, 13594 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 16545 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:19,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 16545 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2512 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2021-11-21 01:40:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25807 states. [2021-11-21 01:40:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25807 to 25416. [2021-11-21 01:40:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25416 states, 15145 states have (on average 1.2638494552657642) internal successors, (19141), 15409 states have internal predecessors, (19141), 8113 states have call successors, (8113), 2156 states have call predecessors, (8113), 2157 states have return successors, (8126), 8065 states have call predecessors, (8126), 8113 states have call successors, (8126) [2021-11-21 01:40:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25416 states to 25416 states and 35380 transitions. [2021-11-21 01:40:20,418 INFO L78 Accepts]: Start accepts. Automaton has 25416 states and 35380 transitions. Word has length 389 [2021-11-21 01:40:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:20,420 INFO L470 AbstractCegarLoop]: Abstraction has 25416 states and 35380 transitions. [2021-11-21 01:40:20,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:40:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 25416 states and 35380 transitions. [2021-11-21 01:40:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-21 01:40:20,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:20,441 INFO L514 BasicCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:20,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:20,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:20,655 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:20,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1307615119, now seen corresponding path program 1 times [2021-11-21 01:40:20,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:20,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712574154] [2021-11-21 01:40:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:20,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:20,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:40:20,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615837209] [2021-11-21 01:40:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:20,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:20,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:40:20,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:40:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:22,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 4411 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:40:22,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2021-11-21 01:40:23,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:40:23,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712574154] [2021-11-21 01:40:23,139 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:40:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615837209] [2021-11-21 01:40:23,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615837209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:23,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:23,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:40:23,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541265217] [2021-11-21 01:40:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:23,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:40:23,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:40:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:23,141 INFO L87 Difference]: Start difference. First operand 25416 states and 35380 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:40:26,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:29,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:31,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:34,508 INFO L93 Difference]: Finished difference Result 52662 states and 73331 transitions. [2021-11-21 01:40:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:34,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 390 [2021-11-21 01:40:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:34,588 INFO L225 Difference]: With dead ends: 52662 [2021-11-21 01:40:34,588 INFO L226 Difference]: Without dead ends: 27275 [2021-11-21 01:40:34,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:40:34,632 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 2435 mSDsluCounter, 10555 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 35 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 12817 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:34,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2435 Valid, 12817 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1712 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-11-21 01:40:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27275 states. [2021-11-21 01:40:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27275 to 25416. [2021-11-21 01:40:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25416 states, 15145 states have (on average 1.2638494552657642) internal successors, (19141), 15409 states have internal predecessors, (19141), 8113 states have call successors, (8113), 2156 states have call predecessors, (8113), 2157 states have return successors, (8126), 8065 states have call predecessors, (8126), 8113 states have call successors, (8126) [2021-11-21 01:40:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25416 states to 25416 states and 35380 transitions. [2021-11-21 01:40:35,527 INFO L78 Accepts]: Start accepts. Automaton has 25416 states and 35380 transitions. Word has length 390 [2021-11-21 01:40:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:35,528 INFO L470 AbstractCegarLoop]: Abstraction has 25416 states and 35380 transitions. [2021-11-21 01:40:35,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:40:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 25416 states and 35380 transitions. [2021-11-21 01:40:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-21 01:40:35,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:35,546 INFO L514 BasicCegarLoop]: trace histogram [25, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:35,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:35,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:35,751 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1189174279, now seen corresponding path program 1 times [2021-11-21 01:40:35,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:35,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199859439] [2021-11-21 01:40:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:35,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:36,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:40:36,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433918539] [2021-11-21 01:40:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:36,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:36,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:36,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:40:36,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:40:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:37,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 4798 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:40:37,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 1424 trivial. 0 not checked. [2021-11-21 01:40:38,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:40:38,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:38,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199859439] [2021-11-21 01:40:38,094 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:40:38,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433918539] [2021-11-21 01:40:38,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433918539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:38,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:38,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:40:38,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741730144] [2021-11-21 01:40:38,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:38,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:40:38,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:40:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:40:38,098 INFO L87 Difference]: Start difference. First operand 25416 states and 35380 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:40:39,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:42,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:44,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:48,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:48,722 INFO L93 Difference]: Finished difference Result 52964 states and 73725 transitions. [2021-11-21 01:40:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:40:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 444 [2021-11-21 01:40:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:48,808 INFO L225 Difference]: With dead ends: 52964 [2021-11-21 01:40:48,808 INFO L226 Difference]: Without dead ends: 27577 [2021-11-21 01:40:48,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:40:48,988 INFO L933 BasicCegarLoop]: 3473 mSDtfsCounter, 2497 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:48,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2501 Valid, 5930 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 820 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2021-11-21 01:40:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27577 states. [2021-11-21 01:40:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27577 to 27561. [2021-11-21 01:40:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27561 states, 16422 states have (on average 1.263122640360492) internal successors, (20743), 16709 states have internal predecessors, (20743), 8798 states have call successors, (8798), 2337 states have call predecessors, (8798), 2340 states have return successors, (8818), 8744 states have call predecessors, (8818), 8798 states have call successors, (8818) [2021-11-21 01:40:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27561 states to 27561 states and 38359 transitions. [2021-11-21 01:40:49,978 INFO L78 Accepts]: Start accepts. Automaton has 27561 states and 38359 transitions. Word has length 444 [2021-11-21 01:40:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:49,980 INFO L470 AbstractCegarLoop]: Abstraction has 27561 states and 38359 transitions. [2021-11-21 01:40:49,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:40:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 27561 states and 38359 transitions. [2021-11-21 01:40:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-11-21 01:40:50,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:50,008 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:50,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-21 01:40:50,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 01:40:50,209 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash -404437355, now seen corresponding path program 1 times [2021-11-21 01:40:50,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:50,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294871385] [2021-11-21 01:40:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:50,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2021-11-21 01:40:50,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:50,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294871385] [2021-11-21 01:40:50,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294871385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:50,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:50,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:40:50,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706743065] [2021-11-21 01:40:50,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:50,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:40:50,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:40:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:40:50,701 INFO L87 Difference]: Start difference. First operand 27561 states and 38359 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-21 01:40:53,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:54,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:56,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:59,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:04,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:04,723 INFO L93 Difference]: Finished difference Result 62929 states and 88978 transitions. [2021-11-21 01:41:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 478 [2021-11-21 01:41:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:04,836 INFO L225 Difference]: With dead ends: 62929 [2021-11-21 01:41:04,836 INFO L226 Difference]: Without dead ends: 35397 [2021-11-21 01:41:04,887 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 [2021-11-21 01:41:04,887 INFO L933 BasicCegarLoop]: 3299 mSDtfsCounter, 685 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 6017 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:04,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 6017 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 811 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-21 01:41:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35397 states. [2021-11-21 01:41:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35397 to 27561. [2021-11-21 01:41:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27561 states, 16422 states have (on average 1.2630617464377054) internal successors, (20742), 16709 states have internal predecessors, (20742), 8798 states have call successors, (8798), 2337 states have call predecessors, (8798), 2340 states have return successors, (8818), 8744 states have call predecessors, (8818), 8798 states have call successors, (8818) [2021-11-21 01:41:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27561 states to 27561 states and 38358 transitions. [2021-11-21 01:41:06,049 INFO L78 Accepts]: Start accepts. Automaton has 27561 states and 38358 transitions. Word has length 478 [2021-11-21 01:41:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:06,050 INFO L470 AbstractCegarLoop]: Abstraction has 27561 states and 38358 transitions. [2021-11-21 01:41:06,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-21 01:41:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 27561 states and 38358 transitions. [2021-11-21 01:41:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-21 01:41:06,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:06,069 INFO L514 BasicCegarLoop]: trace histogram [26, 14, 14, 14, 14, 14, 14, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:06,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:41:06,070 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash 933877869, now seen corresponding path program 1 times [2021-11-21 01:41:06,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:06,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073744723] [2021-11-21 01:41:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:06,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:06,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:41:06,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133410959] [2021-11-21 01:41:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:06,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:41:06,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:41:06,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:41:06,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:41:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:08,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 4874 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:41:08,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2021-11-21 01:41:10,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:41:10,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073744723] [2021-11-21 01:41:10,430 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:41:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133410959] [2021-11-21 01:41:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133410959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:10,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:10,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:41:10,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268534917] [2021-11-21 01:41:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:10,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:41:10,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:41:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:10,433 INFO L87 Difference]: Start difference. First operand 27561 states and 38358 transitions. Second operand has 5 states, 4 states have (on average 38.25) internal successors, (153), 5 states have internal predecessors, (153), 3 states have call successors, (55), 3 states have call predecessors, (55), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-21 01:41:13,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:16,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:17,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:20,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:22,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:25,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:27,825 INFO L93 Difference]: Finished difference Result 56254 states and 78239 transitions. [2021-11-21 01:41:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:41:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 38.25) internal successors, (153), 5 states have internal predecessors, (153), 3 states have call successors, (55), 3 states have call predecessors, (55), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 473 [2021-11-21 01:41:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:28,093 INFO L225 Difference]: With dead ends: 56254 [2021-11-21 01:41:28,093 INFO L226 Difference]: Without dead ends: 28695 [2021-11-21 01:41:28,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:41:28,155 INFO L933 BasicCegarLoop]: 2954 mSDtfsCounter, 750 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:28,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 6350 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1840 Invalid, 3 Unknown, 0 Unchecked, 16.4s Time] [2021-11-21 01:41:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28695 states. [2021-11-21 01:41:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28695 to 28639. [2021-11-21 01:41:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28639 states, 17144 states have (on average 1.260965935604293) internal successors, (21618), 17444 states have internal predecessors, (21618), 9075 states have call successors, (9075), 2415 states have call predecessors, (9075), 2419 states have return successors, (9097), 9011 states have call predecessors, (9097), 9075 states have call successors, (9097) [2021-11-21 01:41:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28639 states to 28639 states and 39790 transitions. [2021-11-21 01:41:29,353 INFO L78 Accepts]: Start accepts. Automaton has 28639 states and 39790 transitions. Word has length 473 [2021-11-21 01:41:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:29,354 INFO L470 AbstractCegarLoop]: Abstraction has 28639 states and 39790 transitions. [2021-11-21 01:41:29,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 38.25) internal successors, (153), 5 states have internal predecessors, (153), 3 states have call successors, (55), 3 states have call predecessors, (55), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-21 01:41:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 28639 states and 39790 transitions. [2021-11-21 01:41:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2021-11-21 01:41:29,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:29,516 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:29,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:41:29,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:41:29,731 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1293332774, now seen corresponding path program 1 times [2021-11-21 01:41:29,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:29,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362103200] [2021-11-21 01:41:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:29,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2021-11-21 01:41:30,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362103200] [2021-11-21 01:41:30,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362103200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:30,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:30,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:41:30,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61832901] [2021-11-21 01:41:30,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:30,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:41:30,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:30,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:41:30,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:30,309 INFO L87 Difference]: Start difference. First operand 28639 states and 39790 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-21 01:41:32,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:34,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:37,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:40,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:44,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:48,518 INFO L93 Difference]: Finished difference Result 81077 states and 116864 transitions. [2021-11-21 01:41:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:41:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 499 [2021-11-21 01:41:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:48,737 INFO L225 Difference]: With dead ends: 81077 [2021-11-21 01:41:48,737 INFO L226 Difference]: Without dead ends: 52467 [2021-11-21 01:41:48,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:48,809 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 1746 mSDsluCounter, 8087 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 645 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 11926 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:48,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 11926 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 1501 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-11-21 01:41:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52467 states. [2021-11-21 01:41:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52467 to 28639. [2021-11-21 01:41:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28639 states, 17144 states have (on average 1.2607326178254783) internal successors, (21614), 17444 states have internal predecessors, (21614), 9075 states have call successors, (9075), 2415 states have call predecessors, (9075), 2419 states have return successors, (9097), 9011 states have call predecessors, (9097), 9075 states have call successors, (9097) [2021-11-21 01:41:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28639 states to 28639 states and 39786 transitions. [2021-11-21 01:41:50,585 INFO L78 Accepts]: Start accepts. Automaton has 28639 states and 39786 transitions. Word has length 499 [2021-11-21 01:41:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:50,587 INFO L470 AbstractCegarLoop]: Abstraction has 28639 states and 39786 transitions. [2021-11-21 01:41:50,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-21 01:41:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28639 states and 39786 transitions. [2021-11-21 01:41:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-21 01:41:50,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:50,610 INFO L514 BasicCegarLoop]: trace histogram [27, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:50,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:41:50,610 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1551554039, now seen corresponding path program 1 times [2021-11-21 01:41:50,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:50,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304534752] [2021-11-21 01:41:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:50,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-11-21 01:41:51,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304534752] [2021-11-21 01:41:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304534752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:51,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:51,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958997005] [2021-11-21 01:41:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:51,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:51,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:51,094 INFO L87 Difference]: Start difference. First operand 28639 states and 39786 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-21 01:41:53,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:56,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:58,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:01,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:04,013 INFO L93 Difference]: Finished difference Result 85566 states and 118849 transitions. [2021-11-21 01:42:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:42:04,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 491 [2021-11-21 01:42:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:04,221 INFO L225 Difference]: With dead ends: 85566 [2021-11-21 01:42:04,221 INFO L226 Difference]: Without dead ends: 56956 [2021-11-21 01:42:04,293 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 [2021-11-21 01:42:04,294 INFO L933 BasicCegarLoop]: 4752 mSDtfsCounter, 2870 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 7444 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:04,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 7444 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1034 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2021-11-21 01:42:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56956 states. [2021-11-21 01:42:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56956 to 56839. [2021-11-21 01:42:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56839 states, 34012 states have (on average 1.2597612607315065) internal successors, (42847), 34666 states have internal predecessors, (42847), 18010 states have call successors, (18010), 4808 states have call predecessors, (18010), 4816 states have return successors, (18054), 17825 states have call predecessors, (18054), 18010 states have call successors, (18054) [2021-11-21 01:42:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56839 states to 56839 states and 78911 transitions. [2021-11-21 01:42:06,874 INFO L78 Accepts]: Start accepts. Automaton has 56839 states and 78911 transitions. Word has length 491 [2021-11-21 01:42:06,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:06,875 INFO L470 AbstractCegarLoop]: Abstraction has 56839 states and 78911 transitions. [2021-11-21 01:42:06,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-21 01:42:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 56839 states and 78911 transitions. [2021-11-21 01:42:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-21 01:42:06,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:06,924 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 13, 13, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:06,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 01:42:06,924 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash 280930331, now seen corresponding path program 1 times [2021-11-21 01:42:06,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:06,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766862322] [2021-11-21 01:42:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:06,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:07,449 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:42:07,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489242457] [2021-11-21 01:42:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:07,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:07,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:07,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:07,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 01:42:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:09,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 6028 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:42:09,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2021-11-21 01:42:09,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:42:09,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:09,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766862322] [2021-11-21 01:42:09,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:42:09,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489242457] [2021-11-21 01:42:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489242457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:09,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:09,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:42:09,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972586892] [2021-11-21 01:42:09,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:09,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:42:09,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:42:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:42:09,932 INFO L87 Difference]: Start difference. First operand 56839 states and 78911 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-11-21 01:42:12,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:15,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:18,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:20,684 INFO L93 Difference]: Finished difference Result 113985 states and 158592 transitions. [2021-11-21 01:42:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:42:20,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 517 [2021-11-21 01:42:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:21,230 INFO L225 Difference]: With dead ends: 113985 [2021-11-21 01:42:21,230 INFO L226 Difference]: Without dead ends: 57175 [2021-11-21 01:42:21,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:42:21,438 INFO L933 BasicCegarLoop]: 2696 mSDtfsCounter, 11 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5377 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:21,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 5377 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 765 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2021-11-21 01:42:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57175 states. [2021-11-21 01:42:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57175 to 56881. [2021-11-21 01:42:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56881 states, 34054 states have (on average 1.2594408880014096) internal successors, (42889), 34708 states have internal predecessors, (42889), 18010 states have call successors, (18010), 4808 states have call predecessors, (18010), 4816 states have return successors, (18054), 17825 states have call predecessors, (18054), 18010 states have call successors, (18054) [2021-11-21 01:42:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56881 states to 56881 states and 78953 transitions. [2021-11-21 01:42:24,529 INFO L78 Accepts]: Start accepts. Automaton has 56881 states and 78953 transitions. Word has length 517 [2021-11-21 01:42:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:24,530 INFO L470 AbstractCegarLoop]: Abstraction has 56881 states and 78953 transitions. [2021-11-21 01:42:24,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-11-21 01:42:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 56881 states and 78953 transitions. [2021-11-21 01:42:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2021-11-21 01:42:24,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:24,578 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 13, 13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:24,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-21 01:42:24,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:42:24,803 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -554607394, now seen corresponding path program 1 times [2021-11-21 01:42:24,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:24,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040720897] [2021-11-21 01:42:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:24,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:25,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:42:25,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332181196] [2021-11-21 01:42:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:25,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:25,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:25,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:42:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 6050 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:42:26,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2021-11-21 01:42:27,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:42:27,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:27,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040720897] [2021-11-21 01:42:27,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:42:27,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332181196] [2021-11-21 01:42:27,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332181196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:27,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:27,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:42:27,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514951080] [2021-11-21 01:42:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:27,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:42:27,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:42:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:42:27,737 INFO L87 Difference]: Start difference. First operand 56881 states and 78953 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-21 01:42:29,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:31,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:33,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:37,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:39,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:41,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:43,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:47,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:50,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:54,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:56,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:59,619 INFO L93 Difference]: Finished difference Result 145336 states and 207970 transitions. [2021-11-21 01:42:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:42:59,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 522 [2021-11-21 01:42:59,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:00,064 INFO L225 Difference]: With dead ends: 145336 [2021-11-21 01:43:00,064 INFO L226 Difference]: Without dead ends: 90624 [2021-11-21 01:43:00,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:43:00,238 INFO L933 BasicCegarLoop]: 4105 mSDtfsCounter, 1746 mSDsluCounter, 7683 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 550 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 10897 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:00,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 10897 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1417 Invalid, 6 Unknown, 0 Unchecked, 28.1s Time] [2021-11-21 01:43:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90624 states. [2021-11-21 01:43:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90624 to 56883. [2021-11-21 01:43:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56883 states, 34056 states have (on average 1.2594256518675124) internal successors, (42891), 34710 states have internal predecessors, (42891), 18010 states have call successors, (18010), 4808 states have call predecessors, (18010), 4816 states have return successors, (18054), 17825 states have call predecessors, (18054), 18010 states have call successors, (18054) [2021-11-21 01:43:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56883 states to 56883 states and 78955 transitions. [2021-11-21 01:43:03,868 INFO L78 Accepts]: Start accepts. Automaton has 56883 states and 78955 transitions. Word has length 522 [2021-11-21 01:43:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:03,872 INFO L470 AbstractCegarLoop]: Abstraction has 56883 states and 78955 transitions. [2021-11-21 01:43:03,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-21 01:43:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 56883 states and 78955 transitions. [2021-11-21 01:43:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-11-21 01:43:03,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:03,911 INFO L514 BasicCegarLoop]: trace histogram [28, 15, 15, 14, 14, 14, 14, 14, 14, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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] [2021-11-21 01:43:03,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:04,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 01:43:04,118 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash 81843802, now seen corresponding path program 1 times [2021-11-21 01:43:04,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:04,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909657858] [2021-11-21 01:43:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:04,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1930 trivial. 0 not checked. [2021-11-21 01:43:04,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:04,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909657858] [2021-11-21 01:43:04,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909657858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:04,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:04,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:43:04,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177355421] [2021-11-21 01:43:04,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:04,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:43:04,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:04,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:43:04,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:43:04,355 INFO L87 Difference]: Start difference. First operand 56883 states and 78955 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:43:06,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:07,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:10,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:13,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:15,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:15,917 INFO L93 Difference]: Finished difference Result 114114 states and 158130 transitions. [2021-11-21 01:43:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:43:15,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 506 [2021-11-21 01:43:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:16,112 INFO L225 Difference]: With dead ends: 114114 [2021-11-21 01:43:16,112 INFO L226 Difference]: Without dead ends: 57260 [2021-11-21 01:43:16,228 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 [2021-11-21 01:43:16,229 INFO L933 BasicCegarLoop]: 2690 mSDtfsCounter, 77 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:16,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 5354 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 778 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-21 01:43:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57260 states. [2021-11-21 01:43:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57260 to 57260. [2021-11-21 01:43:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57260 states, 34298 states have (on average 1.2577409761502127) internal successors, (43138), 34952 states have internal predecessors, (43138), 18016 states have call successors, (18016), 4937 states have call predecessors, (18016), 4945 states have return successors, (18060), 17831 states have call predecessors, (18060), 18016 states have call successors, (18060) [2021-11-21 01:43:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57260 states to 57260 states and 79214 transitions. [2021-11-21 01:43:18,936 INFO L78 Accepts]: Start accepts. Automaton has 57260 states and 79214 transitions. Word has length 506 [2021-11-21 01:43:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:18,936 INFO L470 AbstractCegarLoop]: Abstraction has 57260 states and 79214 transitions. [2021-11-21 01:43:18,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:43:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 57260 states and 79214 transitions. [2021-11-21 01:43:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-11-21 01:43:18,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:18,968 INFO L514 BasicCegarLoop]: trace histogram [28, 15, 15, 14, 14, 14, 14, 14, 14, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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] [2021-11-21 01:43:18,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:43:18,969 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash -540393062, now seen corresponding path program 2 times [2021-11-21 01:43:18,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:18,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252852340] [2021-11-21 01:43:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:18,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 158 proven. 69 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2021-11-21 01:43:19,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:19,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252852340] [2021-11-21 01:43:19,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252852340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:43:19,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113611916] [2021-11-21 01:43:19,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:43:19,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:19,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:19,442 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:19,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc4de38-e7db-4a61-9001-1f7d8292dfb1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-21 01:43:20,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:43:20,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:43:20,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 01:43:21,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2021-11-21 01:44:16,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:44:16,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113611916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:16,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:44:16,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-21 01:44:16,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852065882] [2021-11-21 01:44:16,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:16,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:44:16,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:16,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:44:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:44:16,186 INFO L87 Difference]: Start difference. First operand 57260 states and 79214 transitions. Second operand has 6 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (55), 1 states have call predecessors, (55), 2 states have return successors, (53), 2 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-21 01:44:19,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:21,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:22,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:24,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:27,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:30,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:32,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:36,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:40,671 INFO L93 Difference]: Finished difference Result 67314 states and 92491 transitions. [2021-11-21 01:44:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:44:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (55), 1 states have call predecessors, (55), 2 states have return successors, (53), 2 states have call predecessors, (53), 1 states have call successors, (53) Word has length 506 [2021-11-21 01:44:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:40,859 INFO L225 Difference]: With dead ends: 67314 [2021-11-21 01:44:40,860 INFO L226 Difference]: Without dead ends: 67312 [2021-11-21 01:44:40,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:44:40,882 INFO L933 BasicCegarLoop]: 3213 mSDtfsCounter, 1644 mSDsluCounter, 11223 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 13050 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:40,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 13050 Invalid, 2703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2698 Invalid, 4 Unknown, 0 Unchecked, 22.2s Time] [2021-11-21 01:44:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67312 states. [2021-11-21 01:44:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67312 to 67238. [2021-11-21 01:44:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67238 states, 40334 states have (on average 1.2546486834928348) internal successors, (50605), 41144 states have internal predecessors, (50605), 20862 states have call successors, (20862), 6071 states have call predecessors, (20862), 6041 states have return successors, (20930), 20533 states have call predecessors, (20930), 20862 states have call successors, (20930)