./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.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_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:04:35,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:04:35,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:04:35,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:04:35,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:04:35,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:04:35,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:04:35,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:04:35,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:04:35,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:04:35,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:04:35,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:04:35,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:04:35,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:04:35,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:04:35,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:04:35,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:04:35,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:04:35,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:04:35,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:04:35,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:04:35,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:04:35,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:04:35,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:04:35,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:04:35,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:04:35,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:04:35,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:04:35,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:04:35,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:04:35,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:04:35,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:04:35,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:04:35,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:04:35,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:04:35,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:04:35,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:04:35,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:04:35,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:04:35,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:04:35,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:04:35,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 21:04:35,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:04:35,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:04:35,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:04:35,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:04:35,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:04:35,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:04:35,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:04:35,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:04:35,436 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:04:35,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:04:35,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:04:35,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:04:35,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:04:35,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:04:35,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:04:35,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:04:35,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:04:35,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:04:35,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:04:35,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:04:35,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:04:35,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:35,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:04:35,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:04:35,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:04:35,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:04:35,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:04:35,442 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:04:35,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:04:35,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:04:35,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2022-11-18 21:04:35,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:04:35,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:04:35,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:04:35,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:04:35,801 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:04:35,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-18 21:04:35,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/data/d4476c15c/0770012f37ba417a97376083c40acf54/FLAG4515ae295 [2022-11-18 21:04:36,937 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:04:36,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-18 21:04:37,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/data/d4476c15c/0770012f37ba417a97376083c40acf54/FLAG4515ae295 [2022-11-18 21:04:37,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/data/d4476c15c/0770012f37ba417a97376083c40acf54 [2022-11-18 21:04:37,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:04:37,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:04:37,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:37,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:04:37,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:04:37,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:37" (1/1) ... [2022-11-18 21:04:37,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542e7a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:37, skipping insertion in model container [2022-11-18 21:04:37,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:37" (1/1) ... [2022-11-18 21:04:37,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:04:37,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:04:42,409 WARN L234 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_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/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] [2022-11-18 21:04:42,415 WARN L234 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_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/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] [2022-11-18 21:04:42,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:42,508 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:04:43,093 WARN L234 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_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/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] [2022-11-18 21:04:43,094 WARN L234 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_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/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] [2022-11-18 21:04:43,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:43,508 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:04:43,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43 WrapperNode [2022-11-18 21:04:43,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:43,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:43,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:04:43,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:04:43,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,027 INFO L138 Inliner]: procedures = 623, calls = 3565, calls flagged for inlining = 310, calls inlined = 274, statements flattened = 8340 [2022-11-18 21:04:44,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:44,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:04:44,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:04:44,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:04:44,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:04:44,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:04:44,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:04:44,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:04:44,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:44,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:44,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:04:44,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:04:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-18 21:04:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-18 21:04:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-18 21:04:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-18 21:04:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2022-11-18 21:04:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2022-11-18 21:04:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-18 21:04:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-18 21:04:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2022-11-18 21:04:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2022-11-18 21:04:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-18 21:04:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-18 21:04:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-18 21:04:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-18 21:04:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 21:04:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 21:04:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2022-11-18 21:04:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2022-11-18 21:04:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-18 21:04:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-18 21:04:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-18 21:04:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-18 21:04:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-18 21:04:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-18 21:04:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-18 21:04:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-18 21:04:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 21:04:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 21:04:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2022-11-18 21:04:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2022-11-18 21:04:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2022-11-18 21:04:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2022-11-18 21:04:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2022-11-18 21:04:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2022-11-18 21:04:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2022-11-18 21:04:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2022-11-18 21:04:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-18 21:04:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-18 21:04:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-18 21:04:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-18 21:04:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2022-11-18 21:04:44,768 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2022-11-18 21:04:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-18 21:04:44,768 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-18 21:04:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-18 21:04:44,768 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-18 21:04:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-18 21:04:44,769 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-18 21:04:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-18 21:04:44,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-18 21:04:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 21:04:44,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 21:04:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2022-11-18 21:04:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2022-11-18 21:04:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-18 21:04:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-18 21:04:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-18 21:04:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-18 21:04:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:04:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2022-11-18 21:04:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2022-11-18 21:04:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-18 21:04:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-18 21:04:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2022-11-18 21:04:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2022-11-18 21:04:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-18 21:04:44,772 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-18 21:04:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2022-11-18 21:04:44,772 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2022-11-18 21:04:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-18 21:04:44,772 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-18 21:04:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 21:04:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 21:04:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-18 21:04:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-18 21:04:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 21:04:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2022-11-18 21:04:44,773 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2022-11-18 21:04:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-18 21:04:44,774 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-18 21:04:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-18 21:04:44,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-18 21:04:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2022-11-18 21:04:44,774 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2022-11-18 21:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 21:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-18 21:04:44,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-18 21:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-18 21:04:44,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-18 21:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-18 21:04:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-18 21:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 21:04:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 21:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-18 21:04:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-18 21:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-18 21:04:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-18 21:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-18 21:04:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-18 21:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-18 21:04:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-18 21:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-18 21:04:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-18 21:04:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-18 21:04:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-18 21:04:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2022-11-18 21:04:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2022-11-18 21:04:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-18 21:04:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-18 21:04:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-18 21:04:44,779 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-18 21:04:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2022-11-18 21:04:44,779 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2022-11-18 21:04:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:04:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2022-11-18 21:04:44,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2022-11-18 21:04:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-18 21:04:44,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-18 21:04:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-18 21:04:44,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-18 21:04:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:04:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-18 21:04:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-18 21:04:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-18 21:04:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-18 21:04:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-18 21:04:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-18 21:04:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 21:04:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 21:04:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-18 21:04:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-18 21:04:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-18 21:04:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-18 21:04:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-18 21:04:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-18 21:04:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-18 21:04:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-18 21:04:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2022-11-18 21:04:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2022-11-18 21:04:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2022-11-18 21:04:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2022-11-18 21:04:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-18 21:04:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-18 21:04:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2022-11-18 21:04:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2022-11-18 21:04:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-18 21:04:44,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-18 21:04:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-18 21:04:44,785 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-18 21:04:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-18 21:04:44,785 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-18 21:04:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-18 21:04:44,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-18 21:04:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2022-11-18 21:04:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2022-11-18 21:04:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-18 21:04:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-18 21:04:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-18 21:04:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-18 21:04:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 21:04:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 21:04:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2022-11-18 21:04:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2022-11-18 21:04:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-18 21:04:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-18 21:04:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-18 21:04:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-18 21:04:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:04:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:04:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-18 21:04:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-18 21:04:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-18 21:04:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-18 21:04:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 21:04:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 21:04:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-18 21:04:44,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-18 21:04:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-18 21:04:44,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-18 21:04:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-18 21:04:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-18 21:04:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-18 21:04:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-18 21:04:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-18 21:04:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-18 21:04:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2022-11-18 21:04:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2022-11-18 21:04:44,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2022-11-18 21:04:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2022-11-18 21:04:44,791 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-18 21:04:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-18 21:04:44,791 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-18 21:04:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-18 21:04:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-18 21:04:44,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-18 21:04:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2022-11-18 21:04:44,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2022-11-18 21:04:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-18 21:04:44,792 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-18 21:04:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 21:04:44,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 21:04:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2022-11-18 21:04:44,793 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2022-11-18 21:04:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-18 21:04:44,793 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-18 21:04:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-18 21:04:44,794 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-18 21:04:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:04:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-18 21:04:44,794 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-18 21:04:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-18 21:04:44,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-18 21:04:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-18 21:04:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-18 21:04:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2022-11-18 21:04:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2022-11-18 21:04:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2022-11-18 21:04:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2022-11-18 21:04:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 21:04:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2022-11-18 21:04:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2022-11-18 21:04:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2022-11-18 21:04:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2022-11-18 21:04:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-18 21:04:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-18 21:04:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2022-11-18 21:04:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2022-11-18 21:04:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2022-11-18 21:04:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2022-11-18 21:04:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 21:04:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2022-11-18 21:04:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2022-11-18 21:04:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-18 21:04:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-18 21:04:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-18 21:04:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-18 21:04:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-18 21:04:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-18 21:04:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-18 21:04:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-18 21:04:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-18 21:04:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-18 21:04:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-18 21:04:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-18 21:04:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2022-11-18 21:04:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2022-11-18 21:04:44,800 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2022-11-18 21:04:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2022-11-18 21:04:44,800 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2022-11-18 21:04:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2022-11-18 21:04:44,800 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-18 21:04:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-18 21:04:44,800 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-18 21:04:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-18 21:04:44,801 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2022-11-18 21:04:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2022-11-18 21:04:44,801 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-18 21:04:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-18 21:04:44,801 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-18 21:04:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-18 21:04:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2022-11-18 21:04:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2022-11-18 21:04:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 21:04:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 21:04:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:04:44,803 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2022-11-18 21:04:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2022-11-18 21:04:44,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 21:04:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 21:04:44,803 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2022-11-18 21:04:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2022-11-18 21:04:44,803 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2022-11-18 21:04:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2022-11-18 21:04:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-18 21:04:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-18 21:04:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-18 21:04:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-18 21:04:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2022-11-18 21:04:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2022-11-18 21:04:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2022-11-18 21:04:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2022-11-18 21:04:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-18 21:04:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-18 21:04:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2022-11-18 21:04:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2022-11-18 21:04:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-18 21:04:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-18 21:04:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-18 21:04:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-18 21:04:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-18 21:04:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-18 21:04:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-18 21:04:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-18 21:04:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2022-11-18 21:04:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2022-11-18 21:04:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-18 21:04:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-18 21:04:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-18 21:04:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-18 21:04:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2022-11-18 21:04:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2022-11-18 21:04:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-18 21:04:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-18 21:04:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-18 21:04:44,809 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-18 21:04:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:04:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-18 21:04:44,809 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-18 21:04:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-18 21:04:44,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-18 21:04:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2022-11-18 21:04:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2022-11-18 21:04:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2022-11-18 21:04:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2022-11-18 21:04:46,135 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:04:46,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:04:46,609 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-18 21:04:57,922 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-18 21:04:58,292 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:04:58,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:04:58,333 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 21:04:58,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:58 BoogieIcfgContainer [2022-11-18 21:04:58,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:04:58,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:04:58,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:04:58,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:04:58,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:04:37" (1/3) ... [2022-11-18 21:04:58,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a4aa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:58, skipping insertion in model container [2022-11-18 21:04:58,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (2/3) ... [2022-11-18 21:04:58,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a4aa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:58, skipping insertion in model container [2022-11-18 21:04:58,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:58" (3/3) ... [2022-11-18 21:04:58,360 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-18 21:04:58,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:04:58,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:04:58,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:04:58,595 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29b7f3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:04:58,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:04:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 2933 states, 2017 states have (on average 1.2890431333663857) internal successors, (2600), 2042 states have internal predecessors, (2600), 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) [2022-11-18 21:04:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-18 21:04:58,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:58,673 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 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] [2022-11-18 21:04:58,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1026532290, now seen corresponding path program 1 times [2022-11-18 21:04:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381026233] [2022-11-18 21:04:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 21:04:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 21:04:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:04:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 21:04:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:04:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 21:04:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 21:04:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:04:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 21:04:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 21:05:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 21:05:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-18 21:05:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 21:05:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-18 21:05:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-18 21:05:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:05:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 21:05:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-18 21:05:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-18 21:05:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-11-18 21:05:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2022-11-18 21:05:00,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:00,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381026233] [2022-11-18 21:05:00,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381026233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:00,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647245932] [2022-11-18 21:05:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:05:00,364 INFO L87 Difference]: Start difference. First operand has 2933 states, 2017 states have (on average 1.2890431333663857) internal successors, (2600), 2042 states have internal predecessors, (2600), 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 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 21:05:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:12,086 INFO L93 Difference]: Finished difference Result 8057 states and 11523 transitions. [2022-11-18 21:05:12,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:05:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 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 231 [2022-11-18 21:05:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:12,152 INFO L225 Difference]: With dead ends: 8057 [2022-11-18 21:05:12,152 INFO L226 Difference]: Without dead ends: 5071 [2022-11-18 21:05:12,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:12,187 INFO L413 NwaCegarLoop]: 3372 mSDtfsCounter, 4072 mSDsluCounter, 4109 mSDsCounter, 0 mSdLazyCounter, 3962 mSolverCounterSat, 1726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 7481 SdHoareTripleChecker+Invalid, 5688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1726 IncrementalHoareTripleChecker+Valid, 3962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:12,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 7481 Invalid, 5688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1726 Valid, 3962 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-18 21:05:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2022-11-18 21:05:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 4834. [2022-11-18 21:05:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.2710699342498506) internal successors, (4253), 3389 states have internal predecessors, (4253), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6697 transitions. [2022-11-18 21:05:12,561 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6697 transitions. Word has length 231 [2022-11-18 21:05:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:12,563 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6697 transitions. [2022-11-18 21:05:12,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 21:05:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6697 transitions. [2022-11-18 21:05:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-18 21:05:12,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:12,578 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:12,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:05:12,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1971177191, now seen corresponding path program 1 times [2022-11-18 21:05:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:12,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230927810] [2022-11-18 21:05:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:12,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:12,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230927810] [2022-11-18 21:05:12,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:12,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668891136] [2022-11-18 21:05:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:12,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:12,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:12,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:05:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 3793 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:14,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:15,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:15,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668891136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:15,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:15,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696212274] [2022-11-18 21:05:15,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:15,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:15,119 INFO L87 Difference]: Start difference. First operand 4834 states and 6697 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:15,560 INFO L93 Difference]: Finished difference Result 9635 states and 13359 transitions. [2022-11-18 21:05:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 238 [2022-11-18 21:05:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:15,606 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:15,606 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:15,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:15,633 INFO L413 NwaCegarLoop]: 4010 mSDtfsCounter, 3885 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3885 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:15,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3885 Valid, 4010 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.270472205618649) internal successors, (4251), 3389 states have internal predecessors, (4251), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6695 transitions. [2022-11-18 21:05:16,051 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6695 transitions. Word has length 238 [2022-11-18 21:05:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:16,055 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6695 transitions. [2022-11-18 21:05:16,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6695 transitions. [2022-11-18 21:05:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-18 21:05:16,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:16,067 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:16,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 21:05:16,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:16,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1035159185, now seen corresponding path program 1 times [2022-11-18 21:05:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:16,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687287310] [2022-11-18 21:05:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:16,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687287310] [2022-11-18 21:05:16,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455933830] [2022-11-18 21:05:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:16,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:16,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:16,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:05:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:18,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 3794 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:18,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:18,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:18,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455933830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:18,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:18,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:18,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114044323] [2022-11-18 21:05:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:18,838 INFO L87 Difference]: Start difference. First operand 4834 states and 6695 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:19,140 INFO L93 Difference]: Finished difference Result 9635 states and 13355 transitions. [2022-11-18 21:05:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:19,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 239 [2022-11-18 21:05:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:19,174 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:19,174 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:19,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:19,198 INFO L413 NwaCegarLoop]: 4009 mSDtfsCounter, 3883 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 4009 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:19,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3883 Valid, 4009 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.2698744769874477) internal successors, (4249), 3389 states have internal predecessors, (4249), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6693 transitions. [2022-11-18 21:05:19,590 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6693 transitions. Word has length 239 [2022-11-18 21:05:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:19,591 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6693 transitions. [2022-11-18 21:05:19,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6693 transitions. [2022-11-18 21:05:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-18 21:05:19,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:19,600 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:19,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:19,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:19,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2097078621, now seen corresponding path program 1 times [2022-11-18 21:05:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:19,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593916553] [2022-11-18 21:05:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593916553] [2022-11-18 21:05:20,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066757333] [2022-11-18 21:05:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:20,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:20,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:20,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:20,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:05:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:21,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 3795 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:21,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:22,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:22,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066757333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:22,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:22,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934210629] [2022-11-18 21:05:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:22,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:22,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:22,020 INFO L87 Difference]: Start difference. First operand 4834 states and 6693 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:22,309 INFO L93 Difference]: Finished difference Result 9635 states and 13351 transitions. [2022-11-18 21:05:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:22,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 240 [2022-11-18 21:05:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:22,343 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:22,343 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:22,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:22,368 INFO L413 NwaCegarLoop]: 4008 mSDtfsCounter, 3881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3881 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:22,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3881 Valid, 4008 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:22,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.2692767483562462) internal successors, (4247), 3389 states have internal predecessors, (4247), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6691 transitions. [2022-11-18 21:05:22,748 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6691 transitions. Word has length 240 [2022-11-18 21:05:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:22,749 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6691 transitions. [2022-11-18 21:05:22,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6691 transitions. [2022-11-18 21:05:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-18 21:05:22,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:22,758 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:22,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:22,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:22,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash -297686195, now seen corresponding path program 1 times [2022-11-18 21:05:22,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:22,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687236619] [2022-11-18 21:05:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:23,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:23,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687236619] [2022-11-18 21:05:23,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:23,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116333447] [2022-11-18 21:05:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:23,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:23,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:23,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:05:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3796 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:24,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:25,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:25,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116333447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:25,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:25,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463810270] [2022-11-18 21:05:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:25,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:25,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:25,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:25,066 INFO L87 Difference]: Start difference. First operand 4834 states and 6691 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:25,384 INFO L93 Difference]: Finished difference Result 9635 states and 13347 transitions. [2022-11-18 21:05:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:25,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 241 [2022-11-18 21:05:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:25,422 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:25,422 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:25,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:25,452 INFO L413 NwaCegarLoop]: 4007 mSDtfsCounter, 3879 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:25,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3879 Valid, 4007 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.2686790197250448) internal successors, (4245), 3389 states have internal predecessors, (4245), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6689 transitions. [2022-11-18 21:05:25,861 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6689 transitions. Word has length 241 [2022-11-18 21:05:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:25,864 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6689 transitions. [2022-11-18 21:05:25,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6689 transitions. [2022-11-18 21:05:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 21:05:25,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:25,871 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:25,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:26,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -236579233, now seen corresponding path program 1 times [2022-11-18 21:05:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:26,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458733568] [2022-11-18 21:05:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:26,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:26,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:26,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458733568] [2022-11-18 21:05:26,263 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:26,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559018856] [2022-11-18 21:05:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:26,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:26,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:05:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:27,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:28,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:28,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559018856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:28,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:28,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556287093] [2022-11-18 21:05:28,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:28,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:28,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:28,236 INFO L87 Difference]: Start difference. First operand 4834 states and 6689 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:28,537 INFO L93 Difference]: Finished difference Result 9635 states and 13343 transitions. [2022-11-18 21:05:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 242 [2022-11-18 21:05:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:28,585 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:28,585 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:28,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:28,610 INFO L413 NwaCegarLoop]: 4006 mSDtfsCounter, 3877 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3877 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:28,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3877 Valid, 4006 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.2680812910938435) internal successors, (4243), 3389 states have internal predecessors, (4243), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6687 transitions. [2022-11-18 21:05:29,070 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6687 transitions. Word has length 242 [2022-11-18 21:05:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6687 transitions. [2022-11-18 21:05:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6687 transitions. [2022-11-18 21:05:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-18 21:05:29,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:29,081 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:29,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:29,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1772253193, now seen corresponding path program 1 times [2022-11-18 21:05:29,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:29,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383722304] [2022-11-18 21:05:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:29,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383722304] [2022-11-18 21:05:29,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:29,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526850220] [2022-11-18 21:05:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:29,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:29,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:05:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 3798 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:31,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:31,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526850220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:31,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:31,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:31,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556119191] [2022-11-18 21:05:31,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:31,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:31,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:31,444 INFO L87 Difference]: Start difference. First operand 4834 states and 6687 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:31,751 INFO L93 Difference]: Finished difference Result 9635 states and 13339 transitions. [2022-11-18 21:05:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 243 [2022-11-18 21:05:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:31,781 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:31,782 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:31,801 INFO L413 NwaCegarLoop]: 4005 mSDtfsCounter, 3875 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:31,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3875 Valid, 4005 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.267483562462642) internal successors, (4241), 3389 states have internal predecessors, (4241), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6685 transitions. [2022-11-18 21:05:32,116 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6685 transitions. Word has length 243 [2022-11-18 21:05:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:32,117 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6685 transitions. [2022-11-18 21:05:32,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6685 transitions. [2022-11-18 21:05:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-18 21:05:32,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:32,125 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:32,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:32,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:32,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash -263934437, now seen corresponding path program 1 times [2022-11-18 21:05:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:32,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773023438] [2022-11-18 21:05:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:32,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773023438] [2022-11-18 21:05:32,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:32,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641105403] [2022-11-18 21:05:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:32,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:32,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:32,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:05:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:34,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 3799 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:34,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:34,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641105403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:34,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:34,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109731810] [2022-11-18 21:05:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:34,659 INFO L87 Difference]: Start difference. First operand 4834 states and 6685 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:34,968 INFO L93 Difference]: Finished difference Result 9635 states and 13335 transitions. [2022-11-18 21:05:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 244 [2022-11-18 21:05:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:34,994 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:34,994 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:35,012 INFO L412 NwaCegarLoop]: 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 [2022-11-18 21:05:35,013 INFO L413 NwaCegarLoop]: 4004 mSDtfsCounter, 3873 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3873 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:35,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3873 Valid, 4004 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.2668858338314406) internal successors, (4239), 3389 states have internal predecessors, (4239), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6683 transitions. [2022-11-18 21:05:35,368 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6683 transitions. Word has length 244 [2022-11-18 21:05:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:35,370 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6683 transitions. [2022-11-18 21:05:35,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6683 transitions. [2022-11-18 21:05:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-18 21:05:35,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:35,378 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:35,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:35,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 21:05:35,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1153275077, now seen corresponding path program 1 times [2022-11-18 21:05:35,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:35,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061195608] [2022-11-18 21:05:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:35,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061195608] [2022-11-18 21:05:35,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386506166] [2022-11-18 21:05:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:35,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:05:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:37,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 3800 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:37,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:37,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:37,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386506166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:37,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:37,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:37,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139898072] [2022-11-18 21:05:37,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:37,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:37,793 INFO L87 Difference]: Start difference. First operand 4834 states and 6683 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:38,125 INFO L93 Difference]: Finished difference Result 9635 states and 13331 transitions. [2022-11-18 21:05:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:38,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 245 [2022-11-18 21:05:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:38,150 INFO L225 Difference]: With dead ends: 9635 [2022-11-18 21:05:38,150 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 21:05:38,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:38,170 INFO L413 NwaCegarLoop]: 4003 mSDtfsCounter, 3871 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:38,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3871 Valid, 4003 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 21:05:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4834. [2022-11-18 21:05:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 3346 states have (on average 1.266288105200239) internal successors, (4237), 3389 states have internal predecessors, (4237), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2022-11-18 21:05:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6681 transitions. [2022-11-18 21:05:38,538 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6681 transitions. Word has length 245 [2022-11-18 21:05:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 6681 transitions. [2022-11-18 21:05:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6681 transitions. [2022-11-18 21:05:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-18 21:05:38,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:38,548 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:38,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 21:05:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:38,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2043353641, now seen corresponding path program 1 times [2022-11-18 21:05:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:38,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180391448] [2022-11-18 21:05:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:38,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180391448] [2022-11-18 21:05:38,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009417908] [2022-11-18 21:05:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:38,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:38,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:38,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:38,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:05:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:40,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 3801 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:40,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:40,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009417908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:40,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:40,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:40,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907008875] [2022-11-18 21:05:40,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:40,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:40,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:40,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:40,905 INFO L87 Difference]: Start difference. First operand 4834 states and 6681 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:41,209 INFO L93 Difference]: Finished difference Result 9754 states and 13469 transitions. [2022-11-18 21:05:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:41,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 246 [2022-11-18 21:05:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:41,235 INFO L225 Difference]: With dead ends: 9754 [2022-11-18 21:05:41,235 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:05:41,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:41,254 INFO L413 NwaCegarLoop]: 4063 mSDtfsCounter, 3797 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:41,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3797 Valid, 4205 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:05:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:05:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.265597667638484) internal successors, (4341), 3473 states have internal predecessors, (4341), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:05:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6821 transitions. [2022-11-18 21:05:41,632 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6821 transitions. Word has length 246 [2022-11-18 21:05:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:41,633 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6821 transitions. [2022-11-18 21:05:41,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6821 transitions. [2022-11-18 21:05:41,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-18 21:05:41,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:41,639 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:41,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:41,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:05:41,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:41,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2054887809, now seen corresponding path program 1 times [2022-11-18 21:05:41,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:41,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482171576] [2022-11-18 21:05:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:41,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482171576] [2022-11-18 21:05:42,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829262707] [2022-11-18 21:05:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:42,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:42,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:42,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:05:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:43,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3802 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:43,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:44,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:44,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829262707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:44,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:44,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:44,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520711698] [2022-11-18 21:05:44,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:44,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:44,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:44,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:44,061 INFO L87 Difference]: Start difference. First operand 4953 states and 6821 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:44,524 INFO L93 Difference]: Finished difference Result 9873 states and 13607 transitions. [2022-11-18 21:05:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 247 [2022-11-18 21:05:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:44,550 INFO L225 Difference]: With dead ends: 9873 [2022-11-18 21:05:44,550 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:05:44,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:44,568 INFO L413 NwaCegarLoop]: 4001 mSDtfsCounter, 3867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3867 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:44,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3867 Valid, 4001 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:44,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:05:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:05:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.2650145772594752) internal successors, (4339), 3473 states have internal predecessors, (4339), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:05:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6819 transitions. [2022-11-18 21:05:44,971 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6819 transitions. Word has length 247 [2022-11-18 21:05:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:44,972 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6819 transitions. [2022-11-18 21:05:44,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6819 transitions. [2022-11-18 21:05:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-18 21:05:44,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:44,979 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:45,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:05:45,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 365870483, now seen corresponding path program 1 times [2022-11-18 21:05:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:45,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345365350] [2022-11-18 21:05:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:45,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345365350] [2022-11-18 21:05:45,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:45,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564137831] [2022-11-18 21:05:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:45,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:45,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:45,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:05:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:46,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 3803 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:46,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:47,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:47,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564137831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:47,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:47,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:47,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85149508] [2022-11-18 21:05:47,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:47,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:47,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:47,234 INFO L87 Difference]: Start difference. First operand 4953 states and 6819 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:47,528 INFO L93 Difference]: Finished difference Result 9873 states and 13603 transitions. [2022-11-18 21:05:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:47,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 248 [2022-11-18 21:05:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:47,556 INFO L225 Difference]: With dead ends: 9873 [2022-11-18 21:05:47,556 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:05:47,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:47,573 INFO L413 NwaCegarLoop]: 4000 mSDtfsCounter, 3865 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3865 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:47,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3865 Valid, 4000 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:05:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:05:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.2644314868804665) internal successors, (4337), 3473 states have internal predecessors, (4337), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:05:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6817 transitions. [2022-11-18 21:05:47,989 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6817 transitions. Word has length 248 [2022-11-18 21:05:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:47,989 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6817 transitions. [2022-11-18 21:05:47,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6817 transitions. [2022-11-18 21:05:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-18 21:05:47,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:47,996 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:48,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:48,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:48,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash -339542467, now seen corresponding path program 1 times [2022-11-18 21:05:48,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:48,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732834641] [2022-11-18 21:05:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:48,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:48,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:48,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732834641] [2022-11-18 21:05:48,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:48,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217282305] [2022-11-18 21:05:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:48,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:48,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:48,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:48,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:05:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:49,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 3804 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:50,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:50,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217282305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:50,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:50,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314057611] [2022-11-18 21:05:50,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:50,331 INFO L87 Difference]: Start difference. First operand 4953 states and 6817 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:50,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:50,643 INFO L93 Difference]: Finished difference Result 9873 states and 13599 transitions. [2022-11-18 21:05:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 249 [2022-11-18 21:05:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:50,665 INFO L225 Difference]: With dead ends: 9873 [2022-11-18 21:05:50,666 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:05:50,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:50,682 INFO L413 NwaCegarLoop]: 3999 mSDtfsCounter, 3863 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3863 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:50,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3863 Valid, 3999 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:05:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:05:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.2638483965014577) internal successors, (4335), 3473 states have internal predecessors, (4335), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:05:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6815 transitions. [2022-11-18 21:05:51,118 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6815 transitions. Word has length 249 [2022-11-18 21:05:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:51,119 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6815 transitions. [2022-11-18 21:05:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6815 transitions. [2022-11-18 21:05:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-18 21:05:51,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:51,125 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:51,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:51,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 21:05:51,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash -617990833, now seen corresponding path program 1 times [2022-11-18 21:05:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230124123] [2022-11-18 21:05:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:51,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230124123] [2022-11-18 21:05:51,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597079419] [2022-11-18 21:05:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:51,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:51,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:51,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:51,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:05:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:52,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 3805 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:52,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:53,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:53,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597079419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:53,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:53,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115879784] [2022-11-18 21:05:53,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:53,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:53,337 INFO L87 Difference]: Start difference. First operand 4953 states and 6815 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:53,654 INFO L93 Difference]: Finished difference Result 9873 states and 13595 transitions. [2022-11-18 21:05:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 250 [2022-11-18 21:05:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:53,674 INFO L225 Difference]: With dead ends: 9873 [2022-11-18 21:05:53,674 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:05:53,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:53,689 INFO L413 NwaCegarLoop]: 3998 mSDtfsCounter, 3861 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:53,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 3998 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:05:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:05:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.263265306122449) internal successors, (4333), 3473 states have internal predecessors, (4333), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:05:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6813 transitions. [2022-11-18 21:05:54,139 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6813 transitions. Word has length 250 [2022-11-18 21:05:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:54,140 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6813 transitions. [2022-11-18 21:05:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6813 transitions. [2022-11-18 21:05:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-18 21:05:54,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:54,147 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:54,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:54,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:54,360 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash -545438983, now seen corresponding path program 1 times [2022-11-18 21:05:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:54,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409786647] [2022-11-18 21:05:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:54,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409786647] [2022-11-18 21:05:54,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:54,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622086928] [2022-11-18 21:05:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:54,521 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:54,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 21:05:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 3806 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:56,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:56,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:56,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622086928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:56,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:56,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:56,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130455954] [2022-11-18 21:05:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:56,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:56,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:56,433 INFO L87 Difference]: Start difference. First operand 4953 states and 6813 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:56,826 INFO L93 Difference]: Finished difference Result 9873 states and 13591 transitions. [2022-11-18 21:05:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 251 [2022-11-18 21:05:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:56,843 INFO L225 Difference]: With dead ends: 9873 [2022-11-18 21:05:56,844 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:05:56,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:56,859 INFO L413 NwaCegarLoop]: 3997 mSDtfsCounter, 3859 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3859 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:56,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3859 Valid, 3997 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:05:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:05:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.2626822157434403) internal successors, (4331), 3473 states have internal predecessors, (4331), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:05:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6811 transitions. [2022-11-18 21:05:57,333 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6811 transitions. Word has length 251 [2022-11-18 21:05:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:57,333 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6811 transitions. [2022-11-18 21:05:57,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:05:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6811 transitions. [2022-11-18 21:05:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-18 21:05:57,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:57,340 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:57,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:57,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:05:57,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1818184971, now seen corresponding path program 1 times [2022-11-18 21:05:57,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:57,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424863482] [2022-11-18 21:05:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:57,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:57,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:57,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424863482] [2022-11-18 21:05:57,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:05:57,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550373479] [2022-11-18 21:05:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:57,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:57,719 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:57,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 21:05:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:59,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 3807 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:59,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:05:59,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:59,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550373479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:59,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:59,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:59,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15909009] [2022-11-18 21:05:59,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:59,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:59,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:59,796 INFO L87 Difference]: Start difference. First operand 4953 states and 6811 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:06:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:00,308 INFO L93 Difference]: Finished difference Result 9873 states and 13587 transitions. [2022-11-18 21:06:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:00,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 252 [2022-11-18 21:06:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:00,326 INFO L225 Difference]: With dead ends: 9873 [2022-11-18 21:06:00,326 INFO L226 Difference]: Without dead ends: 4953 [2022-11-18 21:06:00,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:00,338 INFO L413 NwaCegarLoop]: 3996 mSDtfsCounter, 3857 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3857 SdHoareTripleChecker+Valid, 3996 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:00,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3857 Valid, 3996 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:06:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-11-18 21:06:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4953. [2022-11-18 21:06:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3430 states have (on average 1.2620991253644316) internal successors, (4329), 3473 states have internal predecessors, (4329), 1240 states have call successors, (1240), 283 states have call predecessors, (1240), 282 states have return successors, (1240), 1233 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-11-18 21:06:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 6809 transitions. [2022-11-18 21:06:00,839 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 6809 transitions. Word has length 252 [2022-11-18 21:06:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:00,840 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 6809 transitions. [2022-11-18 21:06:00,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:06:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 6809 transitions. [2022-11-18 21:06:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-18 21:06:00,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:00,848 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:00,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:06:01,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2104367179, now seen corresponding path program 1 times [2022-11-18 21:06:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:01,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320903332] [2022-11-18 21:06:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:01,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:01,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:01,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320903332] [2022-11-18 21:06:01,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:06:01,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048047250] [2022-11-18 21:06:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:01,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:01,243 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 21:06:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:02,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 3808 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:06:02,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-18 21:06:03,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:03,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048047250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:03,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:03,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:06:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977718672] [2022-11-18 21:06:03,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:03,175 INFO L87 Difference]: Start difference. First operand 4953 states and 6809 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:06:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:04,004 INFO L93 Difference]: Finished difference Result 14785 states and 20336 transitions. [2022-11-18 21:06:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 253 [2022-11-18 21:06:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:04,049 INFO L225 Difference]: With dead ends: 14785 [2022-11-18 21:06:04,049 INFO L226 Difference]: Without dead ends: 9865 [2022-11-18 21:06:04,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:04,068 INFO L413 NwaCegarLoop]: 5003 mSDtfsCounter, 3856 mSDsluCounter, 3934 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 8937 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:04,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3856 Valid, 8937 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:06:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-11-18 21:06:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 9862. [2022-11-18 21:06:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9862 states, 6834 states have (on average 1.2628036289142524) internal successors, (8630), 6923 states have internal predecessors, (8630), 2464 states have call successors, (2464), 566 states have call predecessors, (2464), 563 states have return successors, (2464), 2446 states have call predecessors, (2464), 2464 states have call successors, (2464) [2022-11-18 21:06:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9862 states to 9862 states and 13558 transitions. [2022-11-18 21:06:05,152 INFO L78 Accepts]: Start accepts. Automaton has 9862 states and 13558 transitions. Word has length 253 [2022-11-18 21:06:05,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:05,153 INFO L495 AbstractCegarLoop]: Abstraction has 9862 states and 13558 transitions. [2022-11-18 21:06:05,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-18 21:06:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 9862 states and 13558 transitions. [2022-11-18 21:06:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-18 21:06:05,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:05,159 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:05,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 21:06:05,360 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2075738028, now seen corresponding path program 1 times [2022-11-18 21:06:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:05,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516338432] [2022-11-18 21:06:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:05,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516338432] [2022-11-18 21:06:05,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:06:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478707360] [2022-11-18 21:06:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:05,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:05,515 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:05,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 21:06:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 3807 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:06:06,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-18 21:06:07,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:07,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478707360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:07,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:07,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:07,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938956226] [2022-11-18 21:06:07,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:07,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:07,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:07,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:07,018 INFO L87 Difference]: Start difference. First operand 9862 states and 13558 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-11-18 21:06:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:08,405 INFO L93 Difference]: Finished difference Result 25826 states and 35449 transitions. [2022-11-18 21:06:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:08,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 253 [2022-11-18 21:06:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:08,457 INFO L225 Difference]: With dead ends: 25826 [2022-11-18 21:06:08,457 INFO L226 Difference]: Without dead ends: 15997 [2022-11-18 21:06:08,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:08,480 INFO L413 NwaCegarLoop]: 5636 mSDtfsCounter, 2814 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 9526 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:08,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2814 Valid, 9526 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:06:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15997 states. [2022-11-18 21:06:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15997 to 15991. [2022-11-18 21:06:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15991 states, 11166 states have (on average 1.2650008955758554) internal successors, (14125), 11294 states have internal predecessors, (14125), 3874 states have call successors, (3874), 954 states have call predecessors, (3874), 950 states have return successors, (3874), 3846 states have call predecessors, (3874), 3874 states have call successors, (3874) [2022-11-18 21:06:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15991 states to 15991 states and 21873 transitions. [2022-11-18 21:06:10,061 INFO L78 Accepts]: Start accepts. Automaton has 15991 states and 21873 transitions. Word has length 253 [2022-11-18 21:06:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:10,062 INFO L495 AbstractCegarLoop]: Abstraction has 15991 states and 21873 transitions. [2022-11-18 21:06:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-11-18 21:06:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15991 states and 21873 transitions. [2022-11-18 21:06:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-18 21:06:10,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:10,070 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 14, 14, 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] [2022-11-18 21:06:10,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:10,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 21:06:10,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1648489871, now seen corresponding path program 1 times [2022-11-18 21:06:10,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:10,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208493503] [2022-11-18 21:06:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:10,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:10,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208493503] [2022-11-18 21:06:10,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:06:10,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465152244] [2022-11-18 21:06:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:10,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:10,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:10,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 21:06:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 4001 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:06:11,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-18 21:06:12,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:12,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465152244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:12,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:12,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921199095] [2022-11-18 21:06:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:12,037 INFO L87 Difference]: Start difference. First operand 15991 states and 21873 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, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-18 21:06:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:13,663 INFO L93 Difference]: Finished difference Result 38108 states and 52087 transitions. [2022-11-18 21:06:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:13,663 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, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 305 [2022-11-18 21:06:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:13,725 INFO L225 Difference]: With dead ends: 38108 [2022-11-18 21:06:13,725 INFO L226 Difference]: Without dead ends: 22150 [2022-11-18 21:06:13,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:13,756 INFO L413 NwaCegarLoop]: 4951 mSDtfsCounter, 3897 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 7759 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:13,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3897 Valid, 7759 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:06:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22150 states. [2022-11-18 21:06:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22150 to 22144. [2022-11-18 21:06:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22144 states, 15506 states have (on average 1.2681542628659874) internal successors, (19664), 15673 states have internal predecessors, (19664), 5288 states have call successors, (5288), 1354 states have call predecessors, (5288), 1349 states have return successors, (5288), 5250 states have call predecessors, (5288), 5288 states have call successors, (5288) [2022-11-18 21:06:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22144 states to 22144 states and 30240 transitions. [2022-11-18 21:06:15,574 INFO L78 Accepts]: Start accepts. Automaton has 22144 states and 30240 transitions. Word has length 305 [2022-11-18 21:06:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:15,575 INFO L495 AbstractCegarLoop]: Abstraction has 22144 states and 30240 transitions. [2022-11-18 21:06:15,575 INFO L496 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, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-18 21:06:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 22144 states and 30240 transitions. [2022-11-18 21:06:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-18 21:06:15,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:15,585 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:15,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-18 21:06:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:15,808 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2130599512, now seen corresponding path program 1 times [2022-11-18 21:06:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396485946] [2022-11-18 21:06:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:15,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:06:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486022809] [2022-11-18 21:06:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:15,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:15,916 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:15,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 21:06:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:17,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 4075 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:06:17,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2022-11-18 21:06:17,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:17,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:17,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396485946] [2022-11-18 21:06:17,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:06:17,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486022809] [2022-11-18 21:06:17,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486022809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:17,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:17,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:17,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503750235] [2022-11-18 21:06:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:17,861 INFO L87 Difference]: Start difference. First operand 22144 states and 30240 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-11-18 21:06:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:20,465 INFO L93 Difference]: Finished difference Result 49418 states and 67447 transitions. [2022-11-18 21:06:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 317 [2022-11-18 21:06:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:20,561 INFO L225 Difference]: With dead ends: 49418 [2022-11-18 21:06:20,561 INFO L226 Difference]: Without dead ends: 27307 [2022-11-18 21:06:20,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:20,613 INFO L413 NwaCegarLoop]: 5527 mSDtfsCounter, 2801 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 9406 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:20,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2801 Valid, 9406 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:06:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27307 states. [2022-11-18 21:06:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27307 to 27301. [2022-11-18 21:06:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27301 states, 19134 states have (on average 1.2662799205602593) internal successors, (24229), 19340 states have internal predecessors, (24229), 6482 states have call successors, (6482), 1690 states have call predecessors, (6482), 1684 states have return successors, (6482), 6434 states have call predecessors, (6482), 6482 states have call successors, (6482) [2022-11-18 21:06:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27301 states to 27301 states and 37193 transitions. [2022-11-18 21:06:23,201 INFO L78 Accepts]: Start accepts. Automaton has 27301 states and 37193 transitions. Word has length 317 [2022-11-18 21:06:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:23,202 INFO L495 AbstractCegarLoop]: Abstraction has 27301 states and 37193 transitions. [2022-11-18 21:06:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-11-18 21:06:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27301 states and 37193 transitions. [2022-11-18 21:06:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-18 21:06:23,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:23,214 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 14, 14, 14, 14, 14, 14, 8, 8, 8, 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] [2022-11-18 21:06:23,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-18 21:06:23,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:23,428 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2086162817, now seen corresponding path program 1 times [2022-11-18 21:06:23,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:23,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636289300] [2022-11-18 21:06:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:23,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:23,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:06:23,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248464725] [2022-11-18 21:06:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:23,552 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:23,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 21:06:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:25,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 4296 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:06:25,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2022-11-18 21:06:25,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:25,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:25,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636289300] [2022-11-18 21:06:25,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:06:25,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248464725] [2022-11-18 21:06:25,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248464725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:25,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:25,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709996652] [2022-11-18 21:06:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:25,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:25,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:25,183 INFO L87 Difference]: Start difference. First operand 27301 states and 37193 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-11-18 21:06:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:28,705 INFO L93 Difference]: Finished difference Result 61642 states and 83948 transitions. [2022-11-18 21:06:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 391 [2022-11-18 21:06:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:28,846 INFO L225 Difference]: With dead ends: 61642 [2022-11-18 21:06:28,846 INFO L226 Difference]: Without dead ends: 34374 [2022-11-18 21:06:28,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:28,913 INFO L413 NwaCegarLoop]: 4919 mSDtfsCounter, 3463 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 8430 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:28,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 8430 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:06:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34374 states. [2022-11-18 21:06:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34374 to 34368. [2022-11-18 21:06:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 24170 states have (on average 1.2667356226727349) internal successors, (30617), 24423 states have internal predecessors, (30617), 8070 states have call successors, (8070), 2134 states have call predecessors, (8070), 2127 states have return successors, (8070), 8012 states have call predecessors, (8070), 8070 states have call successors, (8070) [2022-11-18 21:06:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 46757 transitions. [2022-11-18 21:06:32,224 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 46757 transitions. Word has length 391 [2022-11-18 21:06:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:32,225 INFO L495 AbstractCegarLoop]: Abstraction has 34368 states and 46757 transitions. [2022-11-18 21:06:32,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-11-18 21:06:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 46757 transitions. [2022-11-18 21:06:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-18 21:06:32,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:32,238 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:32,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:32,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:32,439 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -446775692, now seen corresponding path program 1 times [2022-11-18 21:06:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:32,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632033715] [2022-11-18 21:06:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:32,573 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:06:32,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838306556] [2022-11-18 21:06:32,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:32,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:32,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:32,576 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:32,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0042ca8-7c1d-42fb-b4c9-cb189f4eb05f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 21:06:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:34,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 4380 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:06:34,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2022-11-18 21:06:34,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632033715] [2022-11-18 21:06:34,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:06:34,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838306556] [2022-11-18 21:06:34,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838306556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:34,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:34,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:34,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882558844] [2022-11-18 21:06:34,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:34,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:34,385 INFO L87 Difference]: Start difference. First operand 34368 states and 46757 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-18 21:06:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:37,945 INFO L93 Difference]: Finished difference Result 73850 states and 100421 transitions. [2022-11-18 21:06:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 432 [2022-11-18 21:06:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:38,067 INFO L225 Difference]: With dead ends: 73850 [2022-11-18 21:06:38,067 INFO L226 Difference]: Without dead ends: 39515 [2022-11-18 21:06:38,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:38,138 INFO L413 NwaCegarLoop]: 6600 mSDtfsCounter, 3511 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 10051 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:38,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 10051 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]