./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- 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-6b4ec56 [2022-11-20 20:02:58,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:02:58,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:02:58,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:02:58,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:02:58,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:02:58,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:02:58,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:02:58,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:02:58,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:02:58,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:02:58,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:02:58,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:02:58,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:02:58,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:02:58,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:02:58,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:02:58,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:02:58,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:02:58,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:02:58,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:02:58,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:02:58,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:02:58,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:02:58,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:02:58,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:02:58,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:02:58,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:02:58,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:02:58,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:02:58,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:02:58,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:02:58,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:02:58,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:02:58,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:02:58,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:02:58,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:02:58,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:02:58,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:02:58,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:02:58,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:02:58,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:02:58,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:02:58,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:02:58,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:02:58,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:02:58,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:02:58,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:02:58,570 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:02:58,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:02:58,571 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:02:58,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:02:58,571 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:02:58,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:02:58,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:02:58,572 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:02:58,573 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:02:58,573 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:02:58,573 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:02:58,574 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:02:58,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:02:58,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:02:58,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:02:58,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:02:58,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:02:58,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:02:58,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:02:58,576 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:02:58,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:02:58,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:02:58,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:02:58,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:02:58,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:02:58,578 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:02:58,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:02:58,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:02:58,579 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:02:58,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:02:58,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:02:58,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:02:58,580 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_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2022-11-20 20:02:58,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:02:58,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:02:58,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:02:58,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:02:58,975 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:02:58,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-20 20:03:02,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:03:03,198 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:03:03,198 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-20 20:03:03,263 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/data/8320070ee/0aa0b656d9994b67883f98daba0598a1/FLAG541eedc24 [2022-11-20 20:03:03,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/data/8320070ee/0aa0b656d9994b67883f98daba0598a1 [2022-11-20 20:03:03,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:03:03,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:03:03,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:03:03,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:03:03,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:03:03,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:03:03" (1/1) ... [2022-11-20 20:03:03,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81c0b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:03, skipping insertion in model container [2022-11-20 20:03:03,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:03:03" (1/1) ... [2022-11-20 20:03:03,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:03:03,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:03:06,076 WARN L237 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_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2022-11-20 20:03:06,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:03:06,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:03:06,841 WARN L237 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_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2022-11-20 20:03:06,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:03:07,035 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:03:07,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07 WrapperNode [2022-11-20 20:03:07,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:03:07,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:03:07,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:03:07,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:03:07,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:07,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:07,598 INFO L138 Inliner]: procedures = 251, calls = 2672, calls flagged for inlining = 117, calls inlined = 112, statements flattened = 6513 [2022-11-20 20:03:07,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:03:07,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:03:07,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:03:07,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:03:07,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:07,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:07,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:07,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:07,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:08,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:08,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:08,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:08,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:03:08,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:03:08,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:03:08,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:03:08,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (1/1) ... [2022-11-20 20:03:08,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:03:08,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:03:08,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:03:08,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:03:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2022-11-20 20:03:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2022-11-20 20:03:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2022-11-20 20:03:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2022-11-20 20:03:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2022-11-20 20:03:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2022-11-20 20:03:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-20 20:03:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-20 20:03:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2022-11-20 20:03:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2022-11-20 20:03:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2022-11-20 20:03:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2022-11-20 20:03:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2022-11-20 20:03:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2022-11-20 20:03:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2022-11-20 20:03:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2022-11-20 20:03:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:03:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:03:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:03:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:03:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:03:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:03:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:03:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:03:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2022-11-20 20:03:08,318 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2022-11-20 20:03:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2022-11-20 20:03:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2022-11-20 20:03:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-20 20:03:08,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-20 20:03:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2022-11-20 20:03:08,321 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2022-11-20 20:03:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2022-11-20 20:03:08,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2022-11-20 20:03:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-20 20:03:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-20 20:03:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2022-11-20 20:03:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2022-11-20 20:03:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2022-11-20 20:03:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2022-11-20 20:03:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2022-11-20 20:03:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2022-11-20 20:03:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2022-11-20 20:03:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2022-11-20 20:03:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 20:03:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 20:03:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2022-11-20 20:03:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2022-11-20 20:03:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2022-11-20 20:03:08,325 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2022-11-20 20:03:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2022-11-20 20:03:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2022-11-20 20:03:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 20:03:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 20:03:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:03:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:03:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2022-11-20 20:03:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2022-11-20 20:03:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2022-11-20 20:03:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2022-11-20 20:03:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2022-11-20 20:03:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2022-11-20 20:03:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:03:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2022-11-20 20:03:08,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2022-11-20 20:03:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 20:03:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2022-11-20 20:03:08,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2022-11-20 20:03:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:03:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2022-11-20 20:03:08,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2022-11-20 20:03:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 20:03:08,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 20:03:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2022-11-20 20:03:08,330 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2022-11-20 20:03:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:03:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:03:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2022-11-20 20:03:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2022-11-20 20:03:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 20:03:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 20:03:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-20 20:03:08,334 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-20 20:03:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 20:03:08,334 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 20:03:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2022-11-20 20:03:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2022-11-20 20:03:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2022-11-20 20:03:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2022-11-20 20:03:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2022-11-20 20:03:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2022-11-20 20:03:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:03:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-20 20:03:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-20 20:03:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:03:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2022-11-20 20:03:08,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2022-11-20 20:03:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2022-11-20 20:03:08,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2022-11-20 20:03:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2022-11-20 20:03:08,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2022-11-20 20:03:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:03:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2022-11-20 20:03:08,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2022-11-20 20:03:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:03:08,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:03:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2022-11-20 20:03:08,339 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2022-11-20 20:03:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2022-11-20 20:03:08,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2022-11-20 20:03:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 20:03:08,345 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 20:03:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2022-11-20 20:03:08,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2022-11-20 20:03:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:03:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2022-11-20 20:03:08,348 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2022-11-20 20:03:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2022-11-20 20:03:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2022-11-20 20:03:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2022-11-20 20:03:08,355 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2022-11-20 20:03:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2022-11-20 20:03:08,355 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2022-11-20 20:03:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2022-11-20 20:03:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2022-11-20 20:03:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 20:03:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 20:03:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:03:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2022-11-20 20:03:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2022-11-20 20:03:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 20:03:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 20:03:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2022-11-20 20:03:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2022-11-20 20:03:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:03:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2022-11-20 20:03:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2022-11-20 20:03:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:03:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2022-11-20 20:03:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2022-11-20 20:03:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-20 20:03:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-20 20:03:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2022-11-20 20:03:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2022-11-20 20:03:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2022-11-20 20:03:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2022-11-20 20:03:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-20 20:03:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-20 20:03:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-20 20:03:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-20 20:03:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2022-11-20 20:03:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2022-11-20 20:03:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-20 20:03:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-20 20:03:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2022-11-20 20:03:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2022-11-20 20:03:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2022-11-20 20:03:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2022-11-20 20:03:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2022-11-20 20:03:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2022-11-20 20:03:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2022-11-20 20:03:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2022-11-20 20:03:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2022-11-20 20:03:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2022-11-20 20:03:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2022-11-20 20:03:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2022-11-20 20:03:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:03:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:03:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2022-11-20 20:03:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2022-11-20 20:03:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:03:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2022-11-20 20:03:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2022-11-20 20:03:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2022-11-20 20:03:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2022-11-20 20:03:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-20 20:03:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-20 20:03:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:03:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:03:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 20:03:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 20:03:09,547 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:03:09,550 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:03:12,834 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:03:43,196 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:03:46,411 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:03:46,412 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:03:46,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:03:46 BoogieIcfgContainer [2022-11-20 20:03:46,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:03:46,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:03:46,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:03:46,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:03:46,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:03:03" (1/3) ... [2022-11-20 20:03:46,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235ad441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:03:46, skipping insertion in model container [2022-11-20 20:03:46,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:03:07" (2/3) ... [2022-11-20 20:03:46,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235ad441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:03:46, skipping insertion in model container [2022-11-20 20:03:46,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:03:46" (3/3) ... [2022-11-20 20:03:46,436 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-20 20:03:46,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:03:46,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:03:46,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:03:46,577 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23ff0051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:03:46,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:03:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 1457 states, 979 states have (on average 1.4208375893769152) internal successors, (1391), 1030 states have internal predecessors, (1391), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) [2022-11-20 20:03:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-20 20:03:46,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:46,648 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:03:46,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:03:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 530586026, now seen corresponding path program 1 times [2022-11-20 20:03:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:46,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739800381] [2022-11-20 20:03:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-20 20:03:48,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:48,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739800381] [2022-11-20 20:03:48,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739800381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:48,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:03:48,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:03:48,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935955585] [2022-11-20 20:03:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:48,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:03:48,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:03:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:03:48,611 INFO L87 Difference]: Start difference. First operand has 1457 states, 979 states have (on average 1.4208375893769152) internal successors, (1391), 1030 states have internal predecessors, (1391), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 20:03:50,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:03:52,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:03:55,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:03:58,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:04,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:05,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:07,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:07,298 INFO L93 Difference]: Finished difference Result 4084 states and 6132 transitions. [2022-11-20 20:04:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:04:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 433 [2022-11-20 20:04:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:07,357 INFO L225 Difference]: With dead ends: 4084 [2022-11-20 20:04:07,357 INFO L226 Difference]: Without dead ends: 2702 [2022-11-20 20:04:07,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:07,381 INFO L413 NwaCegarLoop]: 2288 mSDtfsCounter, 1903 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 4182 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 472 Invalid, 5 Unknown, 0 Unchecked, 18.4s Time] [2022-11-20 20:04:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2022-11-20 20:04:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2697. [2022-11-20 20:04:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1843 states have (on average 1.4248507867607163) internal successors, (2626), 1925 states have internal predecessors, (2626), 698 states have call successors, (698), 158 states have call predecessors, (698), 155 states have return successors, (696), 671 states have call predecessors, (696), 696 states have call successors, (696) [2022-11-20 20:04:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4020 transitions. [2022-11-20 20:04:07,680 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4020 transitions. Word has length 433 [2022-11-20 20:04:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:07,686 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4020 transitions. [2022-11-20 20:04:07,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 20:04:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4020 transitions. [2022-11-20 20:04:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-20 20:04:07,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:07,708 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:04:07,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:04:07,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:04:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash 251718806, now seen corresponding path program 1 times [2022-11-20 20:04:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:07,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967995006] [2022-11-20 20:04:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-20 20:04:08,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967995006] [2022-11-20 20:04:08,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967995006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:08,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:08,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:04:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242003533] [2022-11-20 20:04:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:08,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:04:08,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:04:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:08,767 INFO L87 Difference]: Start difference. First operand 2697 states and 4020 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 20:04:10,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:12,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:04:16,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:19,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:20,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:22,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:23,213 INFO L93 Difference]: Finished difference Result 5306 states and 7911 transitions. [2022-11-20 20:04:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:04:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 438 [2022-11-20 20:04:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:23,233 INFO L225 Difference]: With dead ends: 5306 [2022-11-20 20:04:23,233 INFO L226 Difference]: Without dead ends: 2698 [2022-11-20 20:04:23,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:23,246 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 0 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:23,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3849 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 461 Invalid, 5 Unknown, 0 Unchecked, 14.3s Time] [2022-11-20 20:04:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-11-20 20:04:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2022-11-20 20:04:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 1844 states have (on average 1.4246203904555315) internal successors, (2627), 1926 states have internal predecessors, (2627), 698 states have call successors, (698), 158 states have call predecessors, (698), 155 states have return successors, (696), 671 states have call predecessors, (696), 696 states have call successors, (696) [2022-11-20 20:04:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4021 transitions. [2022-11-20 20:04:23,577 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4021 transitions. Word has length 438 [2022-11-20 20:04:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 4021 transitions. [2022-11-20 20:04:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 20:04:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4021 transitions. [2022-11-20 20:04:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-20 20:04:23,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:23,601 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:04:23,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:04:23,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:04:23,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2147185505, now seen corresponding path program 1 times [2022-11-20 20:04:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:23,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830439217] [2022-11-20 20:04:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-20 20:04:24,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:24,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830439217] [2022-11-20 20:04:24,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830439217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:04:24,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491745197] [2022-11-20 20:04:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:24,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:04:24,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:04:24,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:04:24,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:04:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:27,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 4777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:04:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4208 trivial. 0 not checked. [2022-11-20 20:04:28,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:04:28,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491745197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:28,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:04:28,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 20:04:28,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068100494] [2022-11-20 20:04:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:28,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:04:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:04:28,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:04:28,807 INFO L87 Difference]: Start difference. First operand 2698 states and 4021 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-20 20:04:30,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:32,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:04:36,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:41,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:42,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:44,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:44,843 INFO L93 Difference]: Finished difference Result 7737 states and 11560 transitions. [2022-11-20 20:04:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:04:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 439 [2022-11-20 20:04:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:44,882 INFO L225 Difference]: With dead ends: 7737 [2022-11-20 20:04:44,882 INFO L226 Difference]: Without dead ends: 5122 [2022-11-20 20:04:44,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:04:44,898 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 1794 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 4156 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:44,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 4156 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 480 Invalid, 5 Unknown, 0 Unchecked, 15.8s Time] [2022-11-20 20:04:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5122 states. [2022-11-20 20:04:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5122 to 5104. [2022-11-20 20:04:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 3516 states have (on average 1.431740614334471) internal successors, (5034), 3675 states have internal predecessors, (5034), 1286 states have call successors, (1286), 308 states have call predecessors, (1286), 301 states have return successors, (1291), 1232 states have call predecessors, (1291), 1283 states have call successors, (1291) [2022-11-20 20:04:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 7611 transitions. [2022-11-20 20:04:45,140 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 7611 transitions. Word has length 439 [2022-11-20 20:04:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:45,142 INFO L495 AbstractCegarLoop]: Abstraction has 5104 states and 7611 transitions. [2022-11-20 20:04:45,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-20 20:04:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 7611 transitions. [2022-11-20 20:04:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-20 20:04:45,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:45,161 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 20:04:45,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:04:45,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:04:45,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:04:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2028091955, now seen corresponding path program 1 times [2022-11-20 20:04:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:45,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377166058] [2022-11-20 20:04:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:45,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:45,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:04:45,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982762334] [2022-11-20 20:04:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:45,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:04:45,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:04:45,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:04:45,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:04:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:48,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 5566 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:04:48,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4209 trivial. 0 not checked. [2022-11-20 20:04:48,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:04:48,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:48,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377166058] [2022-11-20 20:04:48,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:04:48,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982762334] [2022-11-20 20:04:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982762334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:48,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:04:48,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423624434] [2022-11-20 20:04:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:04:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:04:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:48,232 INFO L87 Difference]: Start difference. First operand 5104 states and 7611 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 20:04:50,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:04:52,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:04:55,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:04:58,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:00,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:01,990 INFO L93 Difference]: Finished difference Result 8253 states and 12194 transitions. [2022-11-20 20:05:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:05:01,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 446 [2022-11-20 20:05:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:02,050 INFO L225 Difference]: With dead ends: 8253 [2022-11-20 20:05:02,050 INFO L226 Difference]: Without dead ends: 7552 [2022-11-20 20:05:02,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:02,060 INFO L413 NwaCegarLoop]: 2245 mSDtfsCounter, 2045 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:02,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 4000 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2022-11-20 20:05:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-11-20 20:05:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 7546. [2022-11-20 20:05:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7546 states, 5210 states have (on average 1.4343570057581574) internal successors, (7473), 5444 states have internal predecessors, (7473), 1889 states have call successors, (1889), 457 states have call predecessors, (1889), 446 states have return successors, (1898), 1809 states have call predecessors, (1898), 1886 states have call successors, (1898) [2022-11-20 20:05:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 11260 transitions. [2022-11-20 20:05:02,575 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 11260 transitions. Word has length 446 [2022-11-20 20:05:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:02,576 INFO L495 AbstractCegarLoop]: Abstraction has 7546 states and 11260 transitions. [2022-11-20 20:05:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 20:05:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 11260 transitions. [2022-11-20 20:05:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-20 20:05:02,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:02,598 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:05:02,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:05:02,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:05:02,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash -57181198, now seen corresponding path program 1 times [2022-11-20 20:05:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:02,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010829443] [2022-11-20 20:05:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-20 20:05:03,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010829443] [2022-11-20 20:05:03,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010829443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:03,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:03,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:05:03,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920506501] [2022-11-20 20:05:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:03,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:05:03,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:03,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:05:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:03,501 INFO L87 Difference]: Start difference. First operand 7546 states and 11260 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-20 20:05:05,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:07,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:10,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:13,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:05:16,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:19,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:19,877 INFO L93 Difference]: Finished difference Result 18827 states and 27842 transitions. [2022-11-20 20:05:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:05:19,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 446 [2022-11-20 20:05:19,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:19,963 INFO L225 Difference]: With dead ends: 18827 [2022-11-20 20:05:19,963 INFO L226 Difference]: Without dead ends: 11376 [2022-11-20 20:05:20,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:20,008 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 999 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:20,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 4005 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 5 Unknown, 0 Unchecked, 16.0s Time] [2022-11-20 20:05:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2022-11-20 20:05:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 11366. [2022-11-20 20:05:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 7839 states have (on average 1.4304120423523408) internal successors, (11213), 8183 states have internal predecessors, (11213), 2735 states have call successors, (2735), 815 states have call predecessors, (2735), 791 states have return successors, (2755), 2617 states have call predecessors, (2755), 2731 states have call successors, (2755) [2022-11-20 20:05:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 16703 transitions. [2022-11-20 20:05:20,646 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 16703 transitions. Word has length 446 [2022-11-20 20:05:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 16703 transitions. [2022-11-20 20:05:20,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-20 20:05:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 16703 transitions. [2022-11-20 20:05:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-20 20:05:20,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:20,653 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:05:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:05:20,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash -212757636, now seen corresponding path program 1 times [2022-11-20 20:05:20,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:20,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174740341] [2022-11-20 20:05:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-20 20:05:21,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174740341] [2022-11-20 20:05:21,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174740341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:21,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:21,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:05:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578263175] [2022-11-20 20:05:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:21,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:05:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:05:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:21,419 INFO L87 Difference]: Start difference. First operand 11366 states and 16703 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 20:05:23,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:25,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:05:27,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:05:29,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:05:33,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:36,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:39,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:40,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:40,983 INFO L93 Difference]: Finished difference Result 29597 states and 43360 transitions. [2022-11-20 20:05:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:05:40,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 457 [2022-11-20 20:05:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:41,080 INFO L225 Difference]: With dead ends: 29597 [2022-11-20 20:05:41,081 INFO L226 Difference]: Without dead ends: 18328 [2022-11-20 20:05:41,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:05:41,136 INFO L413 NwaCegarLoop]: 3093 mSDtfsCounter, 1660 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 4887 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:41,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 4887 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 586 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2022-11-20 20:05:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2022-11-20 20:05:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 18278. [2022-11-20 20:05:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18278 states, 12600 states have (on average 1.4244444444444444) internal successors, (17948), 13157 states have internal predecessors, (17948), 4383 states have call successors, (4383), 1328 states have call predecessors, (4383), 1294 states have return successors, (4401), 4182 states have call predecessors, (4401), 4377 states have call successors, (4401) [2022-11-20 20:05:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18278 states to 18278 states and 26732 transitions. [2022-11-20 20:05:42,020 INFO L78 Accepts]: Start accepts. Automaton has 18278 states and 26732 transitions. Word has length 457 [2022-11-20 20:05:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:42,021 INFO L495 AbstractCegarLoop]: Abstraction has 18278 states and 26732 transitions. [2022-11-20 20:05:42,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-20 20:05:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 18278 states and 26732 transitions. [2022-11-20 20:05:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-20 20:05:42,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:42,040 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-11-20 20:05:42,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:05:42,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:42,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:42,041 INFO L85 PathProgramCache]: Analyzing trace with hash 48191363, now seen corresponding path program 1 times [2022-11-20 20:05:42,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:42,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875469759] [2022-11-20 20:05:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-20 20:05:43,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875469759] [2022-11-20 20:05:43,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875469759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:05:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062686375] [2022-11-20 20:05:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:43,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:05:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:05:43,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:05:43,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:05:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:45,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 5132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:05:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:05:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2022-11-20 20:05:45,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:05:45,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062686375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:45,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:05:45,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:05:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48937126] [2022-11-20 20:05:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:05:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:05:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:05:45,569 INFO L87 Difference]: Start difference. First operand 18278 states and 26732 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2022-11-20 20:05:47,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:49,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:05:51,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:05:53,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:05:56,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:06:00,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:06:01,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:06:02,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:06:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:03,242 INFO L93 Difference]: Finished difference Result 36535 states and 53449 transitions. [2022-11-20 20:06:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:06:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 491 [2022-11-20 20:06:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:03,346 INFO L225 Difference]: With dead ends: 36535 [2022-11-20 20:06:03,347 INFO L226 Difference]: Without dead ends: 18354 [2022-11-20 20:06:03,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:06:03,411 INFO L413 NwaCegarLoop]: 1929 mSDtfsCounter, 7 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:03,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3850 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 461 Invalid, 5 Unknown, 0 Unchecked, 17.1s Time] [2022-11-20 20:06:03,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18354 states. [2022-11-20 20:06:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18354 to 18294. [2022-11-20 20:06:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18294 states, 12616 states have (on average 1.4239061509194673) internal successors, (17964), 13173 states have internal predecessors, (17964), 4383 states have call successors, (4383), 1328 states have call predecessors, (4383), 1294 states have return successors, (4401), 4182 states have call predecessors, (4401), 4377 states have call successors, (4401) [2022-11-20 20:06:04,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18294 states to 18294 states and 26748 transitions. [2022-11-20 20:06:04,275 INFO L78 Accepts]: Start accepts. Automaton has 18294 states and 26748 transitions. Word has length 491 [2022-11-20 20:06:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:04,276 INFO L495 AbstractCegarLoop]: Abstraction has 18294 states and 26748 transitions. [2022-11-20 20:06:04,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2022-11-20 20:06:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 18294 states and 26748 transitions. [2022-11-20 20:06:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-20 20:06:04,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:04,296 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-11-20 20:06:04,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:06:04,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:06:04,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:06:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1338311975, now seen corresponding path program 1 times [2022-11-20 20:06:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:04,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182499191] [2022-11-20 20:06:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:04,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-20 20:06:05,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:05,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182499191] [2022-11-20 20:06:05,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182499191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:06:05,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124370529] [2022-11-20 20:06:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:05,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:06:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:06:05,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:06:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2328c9a-db6a-4e2b-a0a6-0357b7cc9cae/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:06:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:08,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 5138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:06:08,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:06:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 4217 trivial. 0 not checked. [2022-11-20 20:06:08,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:06:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-20 20:06:08,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124370529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:06:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1487497878] [2022-11-20 20:06:08,759 INFO L159 IcfgInterpreter]: Started Sifa with 163 locations of interest [2022-11-20 20:06:08,759 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:06:08,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:06:08,769 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:06:08,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:06:13,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:13,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:14,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:14,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:14,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:14,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:14,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:06:16,825 INFO L217 Elim1Store]: Index analysis took 3570 ms [2022-11-20 20:16:03,941 WARN L233 SmtUtils]: Spent 9.78m on a formula simplification. DAG size of input: 7551 DAG size of output: 1975 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 20:16:03,956 INFO L321 Elim1Store]: treesize reduction 88578, result has 4.1 percent of original size [2022-11-20 20:16:03,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 446 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 1537 case distinctions, treesize of input 2660 treesize of output 6277 [2022-11-20 20:16:16,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:16,409 INFO L217 Elim1Store]: Index analysis took 282 ms [2022-11-20 20:16:16,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 1864 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 387 [2022-11-20 20:16:17,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 20:16:17,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:16:17,958 INFO L217 Elim1Store]: Index analysis took 269 ms [2022-11-20 20:16:18,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 45 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 133 [2022-11-20 20:16:19,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6