./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.opt.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_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/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_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/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_77b9d38b-05da-4314-a0a4-733c1abe7fb1/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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- 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 08:13:43,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:13:43,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:13:43,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:13:43,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:13:43,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:13:43,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:13:43,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:13:43,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:13:43,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:13:43,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:13:43,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:13:43,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:13:43,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:13:43,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:13:43,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:13:43,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:13:43,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:13:43,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:13:43,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:13:43,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:13:43,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:13:43,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:13:43,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:13:43,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:13:43,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:13:43,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:13:43,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:13:43,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:13:43,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:13:43,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:13:43,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:13:43,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:13:43,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:13:43,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:13:43,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:13:43,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:13:43,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:13:43,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:13:43,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:13:43,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:13:43,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:13:43,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:13:43,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:13:43,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:13:43,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:13:43,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:13:43,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:13:43,403 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:13:43,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:13:43,403 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:13:43,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:13:43,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:13:43,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:13:43,404 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:13:43,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:13:43,404 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:13:43,405 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:13:43,405 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:13:43,405 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:13:43,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:13:43,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:13:43,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:13:43,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:13:43,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:13:43,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:13:43,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:13:43,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:13:43,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:13:43,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:13:43,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:13:43,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:13:43,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:13:43,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:13:43,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:13:43,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:13:43,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:13:43,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:13:43,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:13:43,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:13:43,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:13:43,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:13:43,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:13:43,410 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_77b9d38b-05da-4314-a0a4-733c1abe7fb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2022-12-14 08:13:43,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:13:43,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:13:43,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:13:43,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:13:43,602 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:13:43,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2022-12-14 08:13:46,176 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:13:46,372 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:13:46,373 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2022-12-14 08:13:46,385 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/data/b256dad1a/5c0fd8029bf1471586650237f52ce9e6/FLAG2a60c4365 [2022-12-14 08:13:46,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/data/b256dad1a/5c0fd8029bf1471586650237f52ce9e6 [2022-12-14 08:13:46,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:13:46,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:13:46,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:13:46,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:13:46,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:13:46,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f177530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46, skipping insertion in model container [2022-12-14 08:13:46,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:13:46,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:13:46,545 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_77b9d38b-05da-4314-a0a4-733c1abe7fb1/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2022-12-14 08:13:46,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:13:46,688 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:13:46,696 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_77b9d38b-05da-4314-a0a4-733c1abe7fb1/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2022-12-14 08:13:46,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 08:13:46,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 08:13:46,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:13:46,754 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:13:46,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46 WrapperNode [2022-12-14 08:13:46,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:13:46,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:13:46,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:13:46,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:13:46,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,790 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2022-12-14 08:13:46,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:13:46,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:13:46,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:13:46,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:13:46,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:13:46,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:13:46,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:13:46,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:13:46,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (1/1) ... [2022-12-14 08:13:46,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:13:46,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:13:46,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:13:46,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:13:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:13:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 08:13:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:13:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:13:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 08:13:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 08:13:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-14 08:13:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-14 08:13:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 08:13:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:13:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:13:46,884 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 08:13:46,996 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:13:46,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:13:47,210 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:13:47,292 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:13:47,292 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:13:47,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:13:47 BoogieIcfgContainer [2022-12-14 08:13:47,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:13:47,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:13:47,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:13:47,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:13:47,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:13:46" (1/3) ... [2022-12-14 08:13:47,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb74746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:13:47, skipping insertion in model container [2022-12-14 08:13:47,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:13:46" (2/3) ... [2022-12-14 08:13:47,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb74746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:13:47, skipping insertion in model container [2022-12-14 08:13:47,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:13:47" (3/3) ... [2022-12-14 08:13:47,300 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2022-12-14 08:13:47,306 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 08:13:47,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:13:47,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:13:47,314 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 08:13:47,354 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 08:13:47,381 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 08:13:47,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 137 transitions, 294 flow [2022-12-14 08:13:47,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 137 transitions, 294 flow [2022-12-14 08:13:47,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-12-14 08:13:47,463 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-12-14 08:13:47,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 08:13:47,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-14 08:13:47,472 INFO L119 LiptonReduction]: Number of co-enabled transitions 3168 [2022-12-14 08:13:52,091 INFO L134 LiptonReduction]: Checked pairs total: 7909 [2022-12-14 08:13:52,091 INFO L136 LiptonReduction]: Total number of compositions: 120 [2022-12-14 08:13:52,098 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 33 transitions, 86 flow [2022-12-14 08:13:52,201 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2602 states, 2599 states have (on average 3.9030396306271644) internal successors, (10144), 2601 states have internal predecessors, (10144), 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 08:13:52,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:13:52,219 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;@254263af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:13:52,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-14 08:13:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 2602 states, 2599 states have (on average 3.9030396306271644) internal successors, (10144), 2601 states have internal predecessors, (10144), 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 08:13:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 08:13:52,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:52,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:52,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1166611833, now seen corresponding path program 1 times [2022-12-14 08:13:52,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:52,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929235623] [2022-12-14 08:13:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:52,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:52,548 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 08:13:52,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:52,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929235623] [2022-12-14 08:13:52,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929235623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:52,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:52,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 08:13:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074284149] [2022-12-14 08:13:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:52,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:13:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:13:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:13:52,578 INFO L87 Difference]: Start difference. First operand has 2602 states, 2599 states have (on average 3.9030396306271644) internal successors, (10144), 2601 states have internal predecessors, (10144), 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 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 08:13:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:52,696 INFO L93 Difference]: Finished difference Result 2202 states and 8344 transitions. [2022-12-14 08:13:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:13:52,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 08:13:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:52,729 INFO L225 Difference]: With dead ends: 2202 [2022-12-14 08:13:52,729 INFO L226 Difference]: Without dead ends: 2122 [2022-12-14 08:13:52,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 08:13:52,733 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:52,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-12-14 08:13:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2022-12-14 08:13:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 3.8095238095238093) internal successors, (8080), 2121 states have internal predecessors, (8080), 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 08:13:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8080 transitions. [2022-12-14 08:13:52,836 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8080 transitions. Word has length 9 [2022-12-14 08:13:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:52,837 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 8080 transitions. [2022-12-14 08:13:52,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 08:13:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8080 transitions. [2022-12-14 08:13:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:13:52,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:52,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:52,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:13:52,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:52,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:52,839 INFO L85 PathProgramCache]: Analyzing trace with hash 127587071, now seen corresponding path program 1 times [2022-12-14 08:13:52,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:52,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800412634] [2022-12-14 08:13:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:53,201 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 08:13:53,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:53,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800412634] [2022-12-14 08:13:53,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800412634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:53,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:53,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:13:53,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651459637] [2022-12-14 08:13:53,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:53,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:13:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:13:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:13:53,204 INFO L87 Difference]: Start difference. First operand 2122 states and 8080 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 08:13:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:53,350 INFO L93 Difference]: Finished difference Result 2602 states and 9504 transitions. [2022-12-14 08:13:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:13:53,351 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 08:13:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:53,363 INFO L225 Difference]: With dead ends: 2602 [2022-12-14 08:13:53,364 INFO L226 Difference]: Without dead ends: 2586 [2022-12-14 08:13:53,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:13:53,365 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:53,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 13 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2022-12-14 08:13:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2106. [2022-12-14 08:13:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 3.705463182897862) internal successors, (7800), 2105 states have internal predecessors, (7800), 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 08:13:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 7800 transitions. [2022-12-14 08:13:53,429 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 7800 transitions. Word has length 11 [2022-12-14 08:13:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:53,429 INFO L495 AbstractCegarLoop]: Abstraction has 2106 states and 7800 transitions. [2022-12-14 08:13:53,429 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 08:13:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 7800 transitions. [2022-12-14 08:13:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:13:53,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:53,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:53,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:13:53,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1985019035, now seen corresponding path program 1 times [2022-12-14 08:13:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:53,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415812361] [2022-12-14 08:13:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:53,625 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 08:13:53,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415812361] [2022-12-14 08:13:53,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415812361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:53,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:53,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 08:13:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897834693] [2022-12-14 08:13:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:53,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:13:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:53,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:13:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:13:53,627 INFO L87 Difference]: Start difference. First operand 2106 states and 7800 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 08:13:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:53,683 INFO L93 Difference]: Finished difference Result 2074 states and 7656 transitions. [2022-12-14 08:13:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:13:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 08:13:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:53,694 INFO L225 Difference]: With dead ends: 2074 [2022-12-14 08:13:53,694 INFO L226 Difference]: Without dead ends: 2074 [2022-12-14 08:13:53,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 08:13:53,695 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:53,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 9 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:13:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-12-14 08:13:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2022-12-14 08:13:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 3.6931982633863965) internal successors, (7656), 2073 states have internal predecessors, (7656), 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 08:13:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 7656 transitions. [2022-12-14 08:13:53,751 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 7656 transitions. Word has length 13 [2022-12-14 08:13:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:53,752 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 7656 transitions. [2022-12-14 08:13:53,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 08:13:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 7656 transitions. [2022-12-14 08:13:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 08:13:53,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:53,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:53,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:13:53,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1352126800, now seen corresponding path program 1 times [2022-12-14 08:13:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:53,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420005824] [2022-12-14 08:13:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:54,337 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 08:13:54,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420005824] [2022-12-14 08:13:54,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420005824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:54,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:54,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:54,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725443613] [2022-12-14 08:13:54,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:54,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:54,340 INFO L87 Difference]: Start difference. First operand 2074 states and 7656 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 08:13:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:54,448 INFO L93 Difference]: Finished difference Result 2362 states and 8748 transitions. [2022-12-14 08:13:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:13:54,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 08:13:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:54,464 INFO L225 Difference]: With dead ends: 2362 [2022-12-14 08:13:54,464 INFO L226 Difference]: Without dead ends: 2362 [2022-12-14 08:13:54,464 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 08:13:54,465 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:54,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 20 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-12-14 08:13:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2306. [2022-12-14 08:13:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 3.7171366594360085) internal successors, (8568), 2305 states have internal predecessors, (8568), 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 08:13:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 8568 transitions. [2022-12-14 08:13:54,538 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 8568 transitions. Word has length 14 [2022-12-14 08:13:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:54,538 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 8568 transitions. [2022-12-14 08:13:54,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 08:13:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 8568 transitions. [2022-12-14 08:13:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 08:13:54,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:54,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:13:54,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1531661440, now seen corresponding path program 2 times [2022-12-14 08:13:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:54,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87391875] [2022-12-14 08:13:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:55,016 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 08:13:55,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:55,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87391875] [2022-12-14 08:13:55,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87391875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:55,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:55,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:55,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136527258] [2022-12-14 08:13:55,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:55,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:55,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:55,018 INFO L87 Difference]: Start difference. First operand 2306 states and 8568 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 08:13:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:55,107 INFO L93 Difference]: Finished difference Result 2258 states and 8356 transitions. [2022-12-14 08:13:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:13:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 08:13:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:55,123 INFO L225 Difference]: With dead ends: 2258 [2022-12-14 08:13:55,123 INFO L226 Difference]: Without dead ends: 2258 [2022-12-14 08:13:55,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:55,124 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:55,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-12-14 08:13:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2242. [2022-12-14 08:13:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2241 states have (on average 3.7054886211512716) internal successors, (8304), 2241 states have internal predecessors, (8304), 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 08:13:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 8304 transitions. [2022-12-14 08:13:55,168 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 8304 transitions. Word has length 14 [2022-12-14 08:13:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:55,168 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 8304 transitions. [2022-12-14 08:13:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 08:13:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 8304 transitions. [2022-12-14 08:13:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 08:13:55,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:55,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:55,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:13:55,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 552286892, now seen corresponding path program 1 times [2022-12-14 08:13:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:55,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689895417] [2022-12-14 08:13:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:55,626 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 08:13:55,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:55,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689895417] [2022-12-14 08:13:55,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689895417] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:55,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:55,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:13:55,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552805863] [2022-12-14 08:13:55,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:55,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:13:55,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:13:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:13:55,628 INFO L87 Difference]: Start difference. First operand 2242 states and 8304 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 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 08:13:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:55,769 INFO L93 Difference]: Finished difference Result 2546 states and 9360 transitions. [2022-12-14 08:13:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:13:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 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 08:13:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:55,779 INFO L225 Difference]: With dead ends: 2546 [2022-12-14 08:13:55,779 INFO L226 Difference]: Without dead ends: 2546 [2022-12-14 08:13:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:55,780 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:55,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 29 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:55,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-12-14 08:13:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2226. [2022-12-14 08:13:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2225 states have (on average 3.6764044943820227) internal successors, (8180), 2225 states have internal predecessors, (8180), 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 08:13:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 8180 transitions. [2022-12-14 08:13:55,841 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 8180 transitions. Word has length 15 [2022-12-14 08:13:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 2226 states and 8180 transitions. [2022-12-14 08:13:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 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 08:13:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 8180 transitions. [2022-12-14 08:13:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 08:13:55,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:55,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:13:55,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:55,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1609396209, now seen corresponding path program 1 times [2022-12-14 08:13:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085963081] [2022-12-14 08:13:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:56,287 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 08:13:56,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:56,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085963081] [2022-12-14 08:13:56,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085963081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:56,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:56,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:56,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317919112] [2022-12-14 08:13:56,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:13:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:13:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:13:56,290 INFO L87 Difference]: Start difference. First operand 2226 states and 8180 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 08:13:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:56,456 INFO L93 Difference]: Finished difference Result 2578 states and 9216 transitions. [2022-12-14 08:13:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:13:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 08:13:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:56,466 INFO L225 Difference]: With dead ends: 2578 [2022-12-14 08:13:56,466 INFO L226 Difference]: Without dead ends: 2250 [2022-12-14 08:13:56,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:13:56,467 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:56,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 30 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-12-14 08:13:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1842. [2022-12-14 08:13:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 3.624117327539381) internal successors, (6672), 1841 states have internal predecessors, (6672), 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 08:13:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 6672 transitions. [2022-12-14 08:13:56,518 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 6672 transitions. Word has length 16 [2022-12-14 08:13:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:56,518 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 6672 transitions. [2022-12-14 08:13:56,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 08:13:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 6672 transitions. [2022-12-14 08:13:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 08:13:56,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:56,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:56,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:13:56,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1875429839, now seen corresponding path program 1 times [2022-12-14 08:13:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:56,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635239057] [2022-12-14 08:13:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:56,708 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 08:13:56,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635239057] [2022-12-14 08:13:56,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635239057] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:56,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:56,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424231770] [2022-12-14 08:13:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:56,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:13:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:13:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:13:56,710 INFO L87 Difference]: Start difference. First operand 1842 states and 6672 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 08:13:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:56,801 INFO L93 Difference]: Finished difference Result 1912 states and 6328 transitions. [2022-12-14 08:13:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:13:56,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 08:13:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:56,805 INFO L225 Difference]: With dead ends: 1912 [2022-12-14 08:13:56,805 INFO L226 Difference]: Without dead ends: 1432 [2022-12-14 08:13:56,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 08:13:56,806 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:56,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 25 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2022-12-14 08:13:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2022-12-14 08:13:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.26764500349406) internal successors, (4676), 1431 states have internal predecessors, (4676), 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 08:13:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 4676 transitions. [2022-12-14 08:13:56,831 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 4676 transitions. Word has length 16 [2022-12-14 08:13:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:56,831 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 4676 transitions. [2022-12-14 08:13:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 08:13:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 4676 transitions. [2022-12-14 08:13:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 08:13:56,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:56,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:56,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:13:56,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1991873106, now seen corresponding path program 1 times [2022-12-14 08:13:56,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:56,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205848421] [2022-12-14 08:13:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:56,945 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 08:13:56,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205848421] [2022-12-14 08:13:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205848421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:56,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:56,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:13:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687195601] [2022-12-14 08:13:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:56,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:56,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:56,947 INFO L87 Difference]: Start difference. First operand 1432 states and 4676 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 08:13:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:57,062 INFO L93 Difference]: Finished difference Result 1241 states and 3755 transitions. [2022-12-14 08:13:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:13:57,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-12-14 08:13:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:57,065 INFO L225 Difference]: With dead ends: 1241 [2022-12-14 08:13:57,065 INFO L226 Difference]: Without dead ends: 941 [2022-12-14 08:13:57,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:13:57,066 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:57,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 35 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-12-14 08:13:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 941. [2022-12-14 08:13:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 940 states have (on average 2.9712765957446807) internal successors, (2793), 940 states have internal predecessors, (2793), 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 08:13:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2793 transitions. [2022-12-14 08:13:57,081 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2793 transitions. Word has length 17 [2022-12-14 08:13:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:57,081 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 2793 transitions. [2022-12-14 08:13:57,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 08:13:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2793 transitions. [2022-12-14 08:13:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 08:13:57,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:57,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:57,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 08:13:57,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash -360793601, now seen corresponding path program 1 times [2022-12-14 08:13:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:57,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374182506] [2022-12-14 08:13:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:57,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:57,172 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 08:13:57,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:57,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374182506] [2022-12-14 08:13:57,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374182506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:57,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:57,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:13:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597019319] [2022-12-14 08:13:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:57,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:13:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:13:57,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:13:57,173 INFO L87 Difference]: Start difference. First operand 941 states and 2793 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 08:13:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:57,226 INFO L93 Difference]: Finished difference Result 1333 states and 3856 transitions. [2022-12-14 08:13:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:13:57,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2022-12-14 08:13:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:57,228 INFO L225 Difference]: With dead ends: 1333 [2022-12-14 08:13:57,228 INFO L226 Difference]: Without dead ends: 945 [2022-12-14 08:13:57,229 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 08:13:57,229 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:57,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:13:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-12-14 08:13:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 927. [2022-12-14 08:13:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 926 states have (on average 2.826133909287257) internal successors, (2617), 926 states have internal predecessors, (2617), 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 08:13:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 2617 transitions. [2022-12-14 08:13:57,241 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 2617 transitions. Word has length 19 [2022-12-14 08:13:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:57,241 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 2617 transitions. [2022-12-14 08:13:57,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 08:13:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 2617 transitions. [2022-12-14 08:13:57,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 08:13:57,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:57,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:57,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 08:13:57,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1488232565, now seen corresponding path program 1 times [2022-12-14 08:13:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925744445] [2022-12-14 08:13:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:57,333 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 08:13:57,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925744445] [2022-12-14 08:13:57,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925744445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:57,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:57,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718115589] [2022-12-14 08:13:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:57,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:13:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:13:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:13:57,334 INFO L87 Difference]: Start difference. First operand 927 states and 2617 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 08:13:57,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:57,417 INFO L93 Difference]: Finished difference Result 1219 states and 3356 transitions. [2022-12-14 08:13:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:13:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-12-14 08:13:57,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:57,419 INFO L225 Difference]: With dead ends: 1219 [2022-12-14 08:13:57,419 INFO L226 Difference]: Without dead ends: 537 [2022-12-14 08:13:57,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 08:13:57,419 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:57,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 21 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-12-14 08:13:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-12-14 08:13:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 2.537313432835821) internal successors, (1360), 536 states have internal predecessors, (1360), 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 08:13:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1360 transitions. [2022-12-14 08:13:57,426 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1360 transitions. Word has length 20 [2022-12-14 08:13:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:57,426 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 1360 transitions. [2022-12-14 08:13:57,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 08:13:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1360 transitions. [2022-12-14 08:13:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 08:13:57,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:57,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 08:13:57,427 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1382299976, now seen corresponding path program 1 times [2022-12-14 08:13:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555337282] [2022-12-14 08:13:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:57,541 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 08:13:57,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:57,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555337282] [2022-12-14 08:13:57,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555337282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:57,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:57,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:57,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840850833] [2022-12-14 08:13:57,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:13:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:13:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:13:57,542 INFO L87 Difference]: Start difference. First operand 537 states and 1360 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 08:13:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:57,651 INFO L93 Difference]: Finished difference Result 458 states and 1112 transitions. [2022-12-14 08:13:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2022-12-14 08:13:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:57,653 INFO L225 Difference]: With dead ends: 458 [2022-12-14 08:13:57,653 INFO L226 Difference]: Without dead ends: 373 [2022-12-14 08:13:57,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:13:57,653 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:57,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 39 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-12-14 08:13:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-12-14 08:13:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 2.4193548387096775) internal successors, (900), 372 states have internal predecessors, (900), 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 08:13:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 900 transitions. [2022-12-14 08:13:57,658 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 900 transitions. Word has length 20 [2022-12-14 08:13:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:57,658 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 900 transitions. [2022-12-14 08:13:57,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 08:13:57,659 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 900 transitions. [2022-12-14 08:13:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 08:13:57,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:57,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:57,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 08:13:57,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2119232919, now seen corresponding path program 1 times [2022-12-14 08:13:57,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:57,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587975593] [2022-12-14 08:13:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:57,803 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 08:13:57,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:57,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587975593] [2022-12-14 08:13:57,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587975593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:57,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:57,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:13:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135991315] [2022-12-14 08:13:57,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:13:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:13:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:13:57,804 INFO L87 Difference]: Start difference. First operand 373 states and 900 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 08:13:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:57,913 INFO L93 Difference]: Finished difference Result 352 states and 858 transitions. [2022-12-14 08:13:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:13:57,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2022-12-14 08:13:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:57,914 INFO L225 Difference]: With dead ends: 352 [2022-12-14 08:13:57,914 INFO L226 Difference]: Without dead ends: 171 [2022-12-14 08:13:57,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:57,915 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 53 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:57,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 23 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:57,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-14 08:13:57,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-12-14 08:13:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.3058823529411763) internal successors, (392), 170 states have internal predecessors, (392), 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 08:13:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 392 transitions. [2022-12-14 08:13:57,918 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 392 transitions. Word has length 23 [2022-12-14 08:13:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:57,918 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 392 transitions. [2022-12-14 08:13:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 08:13:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 392 transitions. [2022-12-14 08:13:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 08:13:57,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:57,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 08:13:57,919 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1086849036, now seen corresponding path program 1 times [2022-12-14 08:13:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:57,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641911378] [2022-12-14 08:13:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:58,032 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 08:13:58,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:58,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641911378] [2022-12-14 08:13:58,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641911378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:58,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:58,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:58,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592896007] [2022-12-14 08:13:58,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:58,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:13:58,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:13:58,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:13:58,034 INFO L87 Difference]: Start difference. First operand 171 states and 392 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 08:13:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:58,092 INFO L93 Difference]: Finished difference Result 219 states and 497 transitions. [2022-12-14 08:13:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:13:58,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2022-12-14 08:13:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:58,093 INFO L225 Difference]: With dead ends: 219 [2022-12-14 08:13:58,093 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 08:13:58,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 08:13:58,094 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:58,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 17 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 08:13:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 08:13:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 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 08:13:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 122 transitions. [2022-12-14 08:13:58,096 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 122 transitions. Word has length 26 [2022-12-14 08:13:58,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:58,096 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 122 transitions. [2022-12-14 08:13:58,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 08:13:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 122 transitions. [2022-12-14 08:13:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 08:13:58,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:58,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:58,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 08:13:58,097 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-14 08:13:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1106242250, now seen corresponding path program 2 times [2022-12-14 08:13:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:58,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866088655] [2022-12-14 08:13:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:13:58,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:13:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:13:58,166 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:13:58,166 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:13:58,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-14 08:13:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-14 08:13:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-14 08:13:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-14 08:13:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-14 08:13:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-14 08:13:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-14 08:13:58,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 08:13:58,171 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:58,175 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 08:13:58,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:13:58,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:13:58 BasicIcfg [2022-12-14 08:13:58,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:13:58,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:13:58,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:13:58,219 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:13:58,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:13:47" (3/4) ... [2022-12-14 08:13:58,221 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 08:13:58,271 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:13:58,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:13:58,271 INFO L158 Benchmark]: Toolchain (without parser) took 11872.99ms. Allocated memory was 113.2MB in the beginning and 343.9MB in the end (delta: 230.7MB). Free memory was 72.7MB in the beginning and 185.8MB in the end (delta: -113.1MB). Peak memory consumption was 119.0MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,272 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:13:58,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.20ms. Allocated memory is still 113.2MB. Free memory was 72.3MB in the beginning and 44.9MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.39ms. Allocated memory is still 113.2MB. Free memory was 44.9MB in the beginning and 42.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,273 INFO L158 Benchmark]: Boogie Preprocessor took 22.27ms. Allocated memory is still 113.2MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,273 INFO L158 Benchmark]: RCFGBuilder took 480.51ms. Allocated memory is still 113.2MB. Free memory was 40.1MB in the beginning and 54.6MB in the end (delta: -14.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,273 INFO L158 Benchmark]: TraceAbstraction took 10923.41ms. Allocated memory was 113.2MB in the beginning and 343.9MB in the end (delta: 230.7MB). Free memory was 54.0MB in the beginning and 200.5MB in the end (delta: -146.5MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,273 INFO L158 Benchmark]: Witness Printer took 51.62ms. Allocated memory is still 343.9MB. Free memory was 199.4MB in the beginning and 185.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:13:58,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.20ms. Allocated memory is still 113.2MB. Free memory was 72.3MB in the beginning and 44.9MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.39ms. Allocated memory is still 113.2MB. Free memory was 44.9MB in the beginning and 42.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.27ms. Allocated memory is still 113.2MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.51ms. Allocated memory is still 113.2MB. Free memory was 40.1MB in the beginning and 54.6MB in the end (delta: -14.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10923.41ms. Allocated memory was 113.2MB in the beginning and 343.9MB in the end (delta: 230.7MB). Free memory was 54.0MB in the beginning and 200.5MB in the end (delta: -146.5MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. * Witness Printer took 51.62ms. Allocated memory is still 343.9MB. Free memory was 199.4MB in the beginning and 185.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 148 PlacesBefore, 45 PlacesAfterwards, 137 TransitionsBefore, 33 TransitionsAfterwards, 3168 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 120 TotalNumberOfCompositions, 7909 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4233, independent: 4026, independent conditional: 0, independent unconditional: 4026, dependent: 207, dependent conditional: 0, dependent unconditional: 207, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2317, independent: 2247, independent conditional: 0, independent unconditional: 2247, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2317, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 104, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 363, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4233, independent: 1779, independent conditional: 0, independent unconditional: 1779, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 2317, unknown conditional: 0, unknown unconditional: 2317] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 199, Positive conditional cache size: 0, Positive unconditional cache size: 199, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L728] 0 int z = 0; [L729] 0 _Bool z$flush_delayed; [L730] 0 int z$mem_tmp; [L731] 0 _Bool z$r_buff0_thd0; [L732] 0 _Bool z$r_buff0_thd1; [L733] 0 _Bool z$r_buff0_thd2; [L734] 0 _Bool z$r_buff0_thd3; [L735] 0 _Bool z$r_buff0_thd4; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$r_buff1_thd4; [L741] 0 _Bool z$read_delayed; [L742] 0 int *z$read_delayed_var; [L743] 0 int z$w_buff0; [L744] 0 _Bool z$w_buff0_used; [L745] 0 int z$w_buff1; [L746] 0 _Bool z$w_buff1_used; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L846] 0 pthread_t t1221; [L847] FCALL, FORK 0 pthread_create(&t1221, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1221, ((void *)0), P0, ((void *)0))=-3, t1221={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L848] 0 pthread_t t1222; [L849] FCALL, FORK 0 pthread_create(&t1222, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1222, ((void *)0), P1, ((void *)0))=-2, t1221={5:0}, t1222={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L850] 0 pthread_t t1223; [L851] FCALL, FORK 0 pthread_create(&t1223, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1223, ((void *)0), P2, ((void *)0))=-1, t1221={5:0}, t1222={6:0}, t1223={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L852] 0 pthread_t t1224; [L853] FCALL, FORK 0 pthread_create(&t1224, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1224, ((void *)0), P3, ((void *)0))=0, t1221={5:0}, t1222={6:0}, t1223={7:0}, t1224={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L802] 4 z$w_buff1 = z$w_buff0 [L803] 4 z$w_buff0 = 2 [L804] 4 z$w_buff1_used = z$w_buff0_used [L805] 4 z$w_buff0_used = (_Bool)1 [L806] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L806] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L807] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L808] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L809] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L810] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L811] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L812] 4 z$r_buff0_thd4 = (_Bool)1 [L815] 4 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L818] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L821] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L755] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L767] 2 x = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L770] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L782] 3 y = 2 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L785] 3 z = 1 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L824] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L825] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L826] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L827] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L828] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L788] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L789] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L790] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L791] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L792] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=2, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L795] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L797] 3 return 0; [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L860] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L861] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L862] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L863] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t1221={5:0}, t1222={6:0}, t1223={7:0}, t1224={3:0}, weak$$choice0=0, weak$$choice2=0, x=1, y=2, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 z$flush_delayed = weak$$choice2 [L869] 0 z$mem_tmp = z [L870] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L871] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L872] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L873] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L874] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L876] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(y == 2 && z == 2 && __unbuffered_p0_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] 0 z = z$flush_delayed ? z$mem_tmp : z [L879] 0 z$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=1, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 173 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 441 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 441 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1209 IncrementalHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 116 mSDtfsCounter, 1209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2602occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1298 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 219 ConstructedInterpolants, 0 QuantifiedInterpolants, 1348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-14 08:13:58,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b9d38b-05da-4314-a0a4-733c1abe7fb1/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE