./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh --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 32bit --witnessprinter.graph.data.programhash 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- 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-2329fc7 [2022-12-14 15:47:20,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:47:20,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:47:20,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:47:20,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:47:20,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:47:20,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:47:20,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:47:20,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:47:20,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:47:20,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:47:20,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:47:20,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:47:20,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:47:20,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:47:20,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:47:20,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:47:20,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:47:20,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:47:20,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:47:20,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:47:20,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:47:20,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:47:20,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:47:20,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:47:20,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:47:20,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:47:20,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:47:20,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:47:20,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:47:20,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:47:20,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:47:20,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:47:20,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:47:20,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:47:20,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:47:20,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:47:20,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:47:20,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:47:20,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:47:20,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:47:20,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:47:20,253 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:47:20,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:47:20,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:47:20,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:47:20,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:47:20,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:47:20,255 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:47:20,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:47:20,255 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:47:20,255 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:47:20,256 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:47:20,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:47:20,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:47:20,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:47:20,256 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:47:20,256 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:47:20,257 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:47:20,257 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:47:20,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:47:20,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:47:20,259 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:47:20,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:47:20,259 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:47:20,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:47:20,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:47:20,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:47:20,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:47:20,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:47:20,260 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:47:20,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:47:20,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:47:20,260 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:47:20,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:47:20,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:47:20,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:47:20,261 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_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2022-12-14 15:47:20,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:47:20,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:47:20,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:47:20,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:47:20,465 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:47:20,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2022-12-14 15:47:23,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:47:23,243 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:47:23,243 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2022-12-14 15:47:23,251 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/data/f91e25294/ee217345074046519c26636ef99643ab/FLAG173fa9ee8 [2022-12-14 15:47:23,261 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/data/f91e25294/ee217345074046519c26636ef99643ab [2022-12-14 15:47:23,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:47:23,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:47:23,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:47:23,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:47:23,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:47:23,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3435b977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23, skipping insertion in model container [2022-12-14 15:47:23,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:47:23,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:47:23,411 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_496dd6f6-cf40-488e-b169-b0789a7e7729/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2022-12-14 15:47:23,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:47:23,519 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:47:23,528 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_496dd6f6-cf40-488e-b169-b0789a7e7729/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2022-12-14 15:47:23,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 15:47:23,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 15:47:23,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:47:23,574 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:47:23,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23 WrapperNode [2022-12-14 15:47:23,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:47:23,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:47:23,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:47:23,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:47:23,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,603 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-14 15:47:23,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:47:23,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:47:23,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:47:23,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:47:23,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:47:23,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:47:23,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:47:23,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:47:23,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (1/1) ... [2022-12-14 15:47:23,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:47:23,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:47:23,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:47:23,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:47:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 15:47:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 15:47:23,678 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 15:47:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-14 15:47:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-14 15:47:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:47:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 15:47:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:47:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:47:23,680 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 15:47:23,775 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:47:23,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:47:23,910 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:47:23,916 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:47:23,917 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 15:47:23,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:23 BoogieIcfgContainer [2022-12-14 15:47:23,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:47:23,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:47:23,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:47:23,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:47:23,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:47:23" (1/3) ... [2022-12-14 15:47:23,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563e3679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:47:23, skipping insertion in model container [2022-12-14 15:47:23,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:23" (2/3) ... [2022-12-14 15:47:23,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563e3679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:47:23, skipping insertion in model container [2022-12-14 15:47:23,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:23" (3/3) ... [2022-12-14 15:47:23,925 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2022-12-14 15:47:23,931 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 15:47:23,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:47:23,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:47:23,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 15:47:23,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 15:47:24,008 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 15:47:24,018 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 92 transitions, 199 flow [2022-12-14 15:47:24,020 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 92 transitions, 199 flow [2022-12-14 15:47:24,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-12-14 15:47:24,073 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-14 15:47:24,073 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 15:47:24,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-14 15:47:24,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2022-12-14 15:47:25,775 INFO L134 LiptonReduction]: Checked pairs total: 3062 [2022-12-14 15:47:25,775 INFO L136 LiptonReduction]: Total number of compositions: 82 [2022-12-14 15:47:25,782 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2022-12-14 15:47:25,816 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:25,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:47:25,833 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;@356f992e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:47:25,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 15:47:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:47:25,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:25,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:25,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash -548304183, now seen corresponding path program 1 times [2022-12-14 15:47:25,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:25,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428603149] [2022-12-14 15:47:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:26,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:26,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428603149] [2022-12-14 15:47:26,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428603149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:26,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:26,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:47:26,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582618951] [2022-12-14 15:47:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:26,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:47:26,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:47:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:47:26,040 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:26,081 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2022-12-14 15:47:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:47:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 15:47:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:26,095 INFO L225 Difference]: With dead ends: 298 [2022-12-14 15:47:26,095 INFO L226 Difference]: Without dead ends: 298 [2022-12-14 15:47:26,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:47:26,098 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:26,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-12-14 15:47:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-12-14 15:47:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2022-12-14 15:47:26,151 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2022-12-14 15:47:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:26,152 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2022-12-14 15:47:26,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2022-12-14 15:47:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 15:47:26,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:26,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:47:26,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 182435477, now seen corresponding path program 1 times [2022-12-14 15:47:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771329504] [2022-12-14 15:47:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:26,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771329504] [2022-12-14 15:47:26,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771329504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:26,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:26,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:47:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717629227] [2022-12-14 15:47:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:26,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:47:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:47:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:47:26,350 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:26,420 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2022-12-14 15:47:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:47:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 15:47:26,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:26,422 INFO L225 Difference]: With dead ends: 346 [2022-12-14 15:47:26,422 INFO L226 Difference]: Without dead ends: 282 [2022-12-14 15:47:26,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:26,423 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:26,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:47:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-14 15:47:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-12-14 15:47:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.8612099644128115) internal successors, (804), 281 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2022-12-14 15:47:26,434 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2022-12-14 15:47:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:26,434 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2022-12-14 15:47:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2022-12-14 15:47:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 15:47:26,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:26,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:26,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:47:26,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash 312117819, now seen corresponding path program 1 times [2022-12-14 15:47:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:26,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52450783] [2022-12-14 15:47:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:26,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:26,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52450783] [2022-12-14 15:47:26,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52450783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:26,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:26,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:47:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944606151] [2022-12-14 15:47:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:26,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:47:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:47:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:26,557 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:26,645 INFO L93 Difference]: Finished difference Result 460 states and 1241 transitions. [2022-12-14 15:47:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:47:26,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 15:47:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:26,647 INFO L225 Difference]: With dead ends: 460 [2022-12-14 15:47:26,647 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 15:47:26,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:47:26,649 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:26,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 8 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:47:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 15:47:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 230. [2022-12-14 15:47:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.6550218340611353) internal successors, (608), 229 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 608 transitions. [2022-12-14 15:47:26,662 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 608 transitions. Word has length 10 [2022-12-14 15:47:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:26,663 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 608 transitions. [2022-12-14 15:47:26,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 608 transitions. [2022-12-14 15:47:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:47:26,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:26,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:26,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:47:26,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash -773511052, now seen corresponding path program 1 times [2022-12-14 15:47:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:26,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879691334] [2022-12-14 15:47:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:26,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:26,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879691334] [2022-12-14 15:47:26,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879691334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:26,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:26,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:47:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106526527] [2022-12-14 15:47:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:26,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:47:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:47:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:47:26,794 INFO L87 Difference]: Start difference. First operand 230 states and 608 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:26,840 INFO L93 Difference]: Finished difference Result 242 states and 613 transitions. [2022-12-14 15:47:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:47:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 15:47:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:26,841 INFO L225 Difference]: With dead ends: 242 [2022-12-14 15:47:26,842 INFO L226 Difference]: Without dead ends: 190 [2022-12-14 15:47:26,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:26,843 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:26,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 13 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-14 15:47:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2022-12-14 15:47:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.585635359116022) internal successors, (468), 181 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 468 transitions. [2022-12-14 15:47:26,852 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 468 transitions. Word has length 11 [2022-12-14 15:47:26,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:26,852 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 468 transitions. [2022-12-14 15:47:26,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 468 transitions. [2022-12-14 15:47:26,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 15:47:26,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:26,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:47:26,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1789638638, now seen corresponding path program 1 times [2022-12-14 15:47:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:26,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094548688] [2022-12-14 15:47:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:26,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:26,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094548688] [2022-12-14 15:47:26,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094548688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:26,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:26,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:47:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225983076] [2022-12-14 15:47:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:26,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:47:26,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:47:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:26,951 INFO L87 Difference]: Start difference. First operand 182 states and 468 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,014 INFO L93 Difference]: Finished difference Result 254 states and 634 transitions. [2022-12-14 15:47:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:47:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 15:47:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,015 INFO L225 Difference]: With dead ends: 254 [2022-12-14 15:47:27,015 INFO L226 Difference]: Without dead ends: 158 [2022-12-14 15:47:27,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:47:27,016 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 13 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-14 15:47:27,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-12-14 15:47:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.4713375796178343) internal successors, (388), 157 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 388 transitions. [2022-12-14 15:47:27,021 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 388 transitions. Word has length 12 [2022-12-14 15:47:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,021 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 388 transitions. [2022-12-14 15:47:27,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 388 transitions. [2022-12-14 15:47:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 15:47:27,022 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:27,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:47:27,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash -314331056, now seen corresponding path program 1 times [2022-12-14 15:47:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:27,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782105456] [2022-12-14 15:47:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:27,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:27,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782105456] [2022-12-14 15:47:27,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782105456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:27,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:27,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 15:47:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116793919] [2022-12-14 15:47:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:27,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:47:27,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:47:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:47:27,134 INFO L87 Difference]: Start difference. First operand 158 states and 388 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,250 INFO L93 Difference]: Finished difference Result 266 states and 620 transitions. [2022-12-14 15:47:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 15:47:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 15:47:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,251 INFO L225 Difference]: With dead ends: 266 [2022-12-14 15:47:27,251 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 15:47:27,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-14 15:47:27,253 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 18 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:47:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 15:47:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2022-12-14 15:47:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.2905982905982905) internal successors, (268), 117 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 268 transitions. [2022-12-14 15:47:27,258 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 268 transitions. Word has length 13 [2022-12-14 15:47:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,258 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 268 transitions. [2022-12-14 15:47:27,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 268 transitions. [2022-12-14 15:47:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 15:47:27,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:27,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:47:27,260 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1818438986, now seen corresponding path program 1 times [2022-12-14 15:47:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:27,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836489371] [2022-12-14 15:47:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:27,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:27,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836489371] [2022-12-14 15:47:27,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836489371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:27,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:27,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:47:27,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542766580] [2022-12-14 15:47:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:27,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:47:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:47:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:47:27,337 INFO L87 Difference]: Start difference. First operand 118 states and 268 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,354 INFO L93 Difference]: Finished difference Result 98 states and 200 transitions. [2022-12-14 15:47:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:47:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 15:47:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,355 INFO L225 Difference]: With dead ends: 98 [2022-12-14 15:47:27,355 INFO L226 Difference]: Without dead ends: 98 [2022-12-14 15:47:27,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:47:27,356 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-14 15:47:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-14 15:47:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.0618556701030926) internal successors, (200), 97 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 200 transitions. [2022-12-14 15:47:27,359 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 200 transitions. Word has length 14 [2022-12-14 15:47:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,359 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 200 transitions. [2022-12-14 15:47:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 200 transitions. [2022-12-14 15:47:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 15:47:27,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:27,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:47:27,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1491312565, now seen corresponding path program 1 times [2022-12-14 15:47:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:27,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313516661] [2022-12-14 15:47:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:27,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:27,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313516661] [2022-12-14 15:47:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313516661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:27,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:27,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:47:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954125879] [2022-12-14 15:47:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:47:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:47:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:47:27,434 INFO L87 Difference]: Start difference. First operand 98 states and 200 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,458 INFO L93 Difference]: Finished difference Result 75 states and 135 transitions. [2022-12-14 15:47:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:47:27,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 15:47:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,459 INFO L225 Difference]: With dead ends: 75 [2022-12-14 15:47:27,459 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 15:47:27,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:47:27,460 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 15:47:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-12-14 15:47:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.8243243243243243) internal successors, (135), 74 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2022-12-14 15:47:27,463 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2022-12-14 15:47:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,464 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2022-12-14 15:47:27,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2022-12-14 15:47:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 15:47:27,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:27,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 15:47:27,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:27,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash -596805386, now seen corresponding path program 1 times [2022-12-14 15:47:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:27,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292966001] [2022-12-14 15:47:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:27,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292966001] [2022-12-14 15:47:27,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292966001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:27,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:27,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:47:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380895849] [2022-12-14 15:47:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:47:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:47:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:27,572 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,595 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2022-12-14 15:47:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:47:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 15:47:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,596 INFO L225 Difference]: With dead ends: 61 [2022-12-14 15:47:27,596 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 15:47:27,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:27,597 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 15:47:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2022-12-14 15:47:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 99 transitions. [2022-12-14 15:47:27,600 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 99 transitions. Word has length 16 [2022-12-14 15:47:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,600 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 99 transitions. [2022-12-14 15:47:27,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 99 transitions. [2022-12-14 15:47:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:47:27,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:27,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 15:47:27,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1758550766, now seen corresponding path program 1 times [2022-12-14 15:47:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:27,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174395901] [2022-12-14 15:47:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:27,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:27,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:27,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174395901] [2022-12-14 15:47:27,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174395901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:27,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:27,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:47:27,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416529773] [2022-12-14 15:47:27,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:27,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:47:27,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:27,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:47:27,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:27,697 INFO L87 Difference]: Start difference. First operand 57 states and 99 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,748 INFO L93 Difference]: Finished difference Result 73 states and 123 transitions. [2022-12-14 15:47:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:47:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 15:47:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,749 INFO L225 Difference]: With dead ends: 73 [2022-12-14 15:47:27,749 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 15:47:27,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:47:27,750 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 15:47:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 15:47:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2022-12-14 15:47:27,752 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 18 [2022-12-14 15:47:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,752 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2022-12-14 15:47:27,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2022-12-14 15:47:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:47:27,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:47:27,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 15:47:27,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 15:47:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:47:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 240757382, now seen corresponding path program 2 times [2022-12-14 15:47:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:47:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686808743] [2022-12-14 15:47:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:47:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:47:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:47:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:47:27,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:47:27,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686808743] [2022-12-14 15:47:27,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686808743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:47:27,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:47:27,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:47:27,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919944344] [2022-12-14 15:47:27,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:47:27,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:47:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:47:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:47:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:27,843 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:27,899 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-12-14 15:47:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:47:27,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 15:47:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:27,899 INFO L225 Difference]: With dead ends: 38 [2022-12-14 15:47:27,899 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 15:47:27,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:47:27,900 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:27,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:47:27,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 15:47:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 15:47:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 15:47:27,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-12-14 15:47:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:47:27,902 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 15:47:27,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 15:47:27,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 15:47:27,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-14 15:47:27,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-14 15:47:27,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-14 15:47:27,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-14 15:47:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 15:47:27,906 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:47:27,909 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 15:47:27,909 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:47:27,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:47:27 BasicIcfg [2022-12-14 15:47:27,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:47:27,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:47:27,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:47:27,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:47:27,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:23" (3/4) ... [2022-12-14 15:47:27,913 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 15:47:27,922 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-14 15:47:27,922 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-14 15:47:27,922 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-14 15:47:27,925 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-14 15:47:27,925 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 15:47:27,925 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 15:47:27,925 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 15:47:27,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 15:47:27,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:47:27,946 INFO L158 Benchmark]: Toolchain (without parser) took 4681.57ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 105.2MB in the beginning and 134.4MB in the end (delta: -29.2MB). Peak memory consumption was 99.1MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,946 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:47:27,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.61ms. Allocated memory is still 138.4MB. Free memory was 105.2MB in the beginning and 81.9MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.82ms. Allocated memory is still 138.4MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,947 INFO L158 Benchmark]: Boogie Preprocessor took 16.86ms. Allocated memory is still 138.4MB. Free memory was 79.8MB in the beginning and 78.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,947 INFO L158 Benchmark]: RCFGBuilder took 297.69ms. Allocated memory is still 138.4MB. Free memory was 78.2MB in the beginning and 64.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,947 INFO L158 Benchmark]: TraceAbstraction took 3990.02ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 63.9MB in the beginning and 39.6MB in the end (delta: 24.3MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,947 INFO L158 Benchmark]: Witness Printer took 34.92ms. Allocated memory is still 167.8MB. Free memory was 39.6MB in the beginning and 134.4MB in the end (delta: -94.8MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2022-12-14 15:47:27,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.61ms. Allocated memory is still 138.4MB. Free memory was 105.2MB in the beginning and 81.9MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.82ms. Allocated memory is still 138.4MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.86ms. Allocated memory is still 138.4MB. Free memory was 79.8MB in the beginning and 78.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.69ms. Allocated memory is still 138.4MB. Free memory was 78.2MB in the beginning and 64.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3990.02ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 63.9MB in the beginning and 39.6MB in the end (delta: 24.3MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Witness Printer took 34.92ms. Allocated memory is still 167.8MB. Free memory was 39.6MB in the beginning and 134.4MB in the end (delta: -94.8MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 100 PlacesBefore, 32 PlacesAfterwards, 92 TransitionsBefore, 23 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 82 TotalNumberOfCompositions, 3062 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1723, independent: 1641, independent conditional: 0, independent unconditional: 1641, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1155, independent: 1119, independent conditional: 0, independent unconditional: 1119, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1155, independent: 1111, independent conditional: 0, independent unconditional: 1111, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1723, independent: 522, independent conditional: 0, independent unconditional: 522, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 1155, unknown conditional: 0, unknown unconditional: 1155] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 207 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 40 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 108 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 15:47:27,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_496dd6f6-cf40-488e-b169-b0789a7e7729/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE